- Patch #9983 by Stefan: various code style improvements.

Tabs patch!

CHANGES
-------

 + Introduced tabs. First, we extended the menu system to support tabs. Next, a tab was added for every link that was (1) an administrative action other than the implicit 'view' (2) relevant to that particular page only. This is illustrated by the fact that all tabs are verbs and that clicking a page's tab leads you to a subpage of that page.

 + Flattened the administration menu. The tabs helped simplify the navigation menu as I could separate 'actions' from 'navigation'. In addition, I removed the 'administer > configuration'-menu, renamed 'blocks' to 'sidebars' which I hope is a bit more descriptive, and made a couple more changes. Earlier, we already renamed 'taxonomy' to 'categorization' and we move 'statistics' under 'logs'.

 + Grouped settings. All settings have been grouped under 'administer > settings'.

TODO
----

 + Update core themes: only Xtemplate default supports tabs and even those look ugly.  Need help.

 + Update contributed modules.  The menu() hook changed drastically.  Updating your code adhere the new menu() function should be 90% of the work.  Moreover, ensure that your modue's admin links are still valid and that URLs to node get updated to the new scheme ('node/view/x' -> 'node/x').

- Added support for 403 handling.  Patch by JonBob.  As a side benefit,
  administrators will be able to define a custom 403 page, just as they
  can define 404 pages now.

  This needs to be documented in the "Changes since / migrating to ..."
  pages.

  configurable!  Menu items can be disabled, repositioned, added and
  so on.

  Upgrading to requires you to run update.php.

  This functionality depricates some of the 'navigation modules' in the
  contributions repository.  Furthermore, modules can now 'suggest'
  menu items and site adminstrators can choose to enable them.  Modules
  in the contributions repository should try to take advantage of this.

- Reworked 404 (page not found) handling.  Patch by walkah.  You can specify a
  custom 404 page in the administration page.  As a result, error.php could be
  removed.

- Committed phase 4 of JonBob's menu system changes.

- Patch by JonBob:

  Phase 2 of the menu system integration project. This unifies the interface
  used by admin and non-admin pages, and deprecates the _page hook in favor of
  explicit callbacks from menu(). Breadcrumbs, titles, and help text go away
  as a result of this patch; they will return in the phase 3 patch, printed
  by the theme.

- Removed duplicate call to drupal_page_header().  Patch by Moshe.

- Fixed sess_write().
- Removed dead code in index.php.

- Improved module loading when serving cached pages.  Moshe's bootstrap patch.

- Used legend and fieldset tags for the configuration page.

- Added missing print statements.  Patch #144 by CodeMonkeyX.

- Committed stage 1 of the menu callbacks improvements.  Patch by Jonathan.

- Improvement: made it possible to disable the comment controls and reworded some of the configuration settings.

- Improvement: removed a left-over from Drupal 4.2.0 (dead code).

- Improvement: replaced hard-coded XHTML around the XML icons with class="xml-icon".

- Improvement: removed the custom navigation menus shown at the top of the "user information page" and integrated them in the new navigation block.  The "my account" link in the navigation menu will unfold.  Also removed the "delete account" link/functionality (for now).

- Improvement: fix for "magic quotes" settings.  Patch by Steven.  I also removed check_php_settings().

- Improvement: block themability improvements.  Modified patch from Ax and Steve/CodeMonkeyX.

- Fixed bug #2617: editing user information does not work.  Patch by Kjartan.

- Url aliasing improvements.  Patch by Matt.  See mailing list for more
  information.

  "create content" link.

- Manually merged the user module's new menu items.  Al's patch did not
  apply.

- Added some missing t()s.

- Small index.php improvement.  Modified patch from Bart Jansens.

- Commited the URL aliasing patch.  Thanks Matt.

  This update requires you to run update.php!

- Improvement: don't perform XSS checks for trusted users.  Trusted users
  are those that have the "bypass input data check" permission set.  Should
  address bug #2147.

- Improvement: simplified index.php and modules/admin.module.

- Bugfix: fixed broken links in bloggerapi documentation.  Patch by Chris
  Johnson.  Fixes bug #2030.

- Bugfix: fixed the date shown on a book module preview.  Reported as part
  of bug #2097.

- Bugfix: fixed broken URL in the book module documentation.

  Eric A. Farris.

- The page_footer() function was always called twice due to the introduction
  of the "footer" hook (and because of the existence of the page module).
  This caused the node view counter to be incremented twice per page view,
  the cache being set twice, etc.  Quite a bug.

- Fixed a typo in the PostgreSQL database scheme.  Patch by Michael Frankowski.

- Fixed a typo in the MSSQL database scheme.  Patch by Michael Frankowski.

- Removed dependency on "register_globals = on"!  Patches by Michael Frankowski.

  Notes:

  + Updated the patches to use $foo["bar"] instead of $foo['bar'].
  + Updated the INSTALL and CHANGELOG files as well.

- Tiny improvement to the "./scripts/code-clean.sh" script.

- Fixed some PHP "notices".

- Fixed "undefined index/variable" warning.  Patch by Ax.

- Everything is using theme("function") now instead of $theme->function().

- Clean URL patch.

- Added a check for register_globals.

- Made Drupal report an error when magic_quotes are disabled.

- Removed dead code.

Committing Changes by Moshe Weitzman:
- admin_user_account(), user_edit(), and user_view() no longer have any
  hard code for authentication modules. instead authentication modules
  implement the _user hook.
- fixed a couple 'help' typos.
- linked the 'REGISTER' text in the login block to the register page.
  this page now advertises DA better if site employs DA.
- admins may now edit everything about a user account (was a feature
  request).
- user #1 may now login immediately, in addition to receiving his
  password via email.

Other changes:
- modules and themes are now enabled/disabled in the administrative /
  settings / modules | themes pages. Requires SQL update and things must
  be enabled before your site returns to normal. TODO: enable all
  functionality. (For now just do UPDATE system SET status = 1;)
- removed $themes from conf.php.
- added a $theme->system() function where theme can specify settings.
  All themes in the Drupal CVS have been updated to use this.
- added _system hook to modules. TODO: update modules to use this.
- changed strange use of sprintf to the usual strtr. The disadvantage of
  sprintf is that it requires translations to keep the string order,
  which may not be possible in all languages.
- an invalid/nonexisting theme in a user profile will now fallback to the
  BaseTheme instead of crashing.

  more in tune with the rest of Drupal.

- A large batch of updates, amongst them a rewritten node system.  More
  information available on the mailing list.

  variables.

  Example: set site_frontpage to "node" and site_frontpage_extra to
  "$meta = 'news'" and only nodes with that meta tag will be displayed on
   your main page.

  This requires some internal knowledge of how the various modules work
  and what settings can be passed to <module>_page() functions.

  easier. Also changed the <? tag to <?php in some cases.

- a batch of updates, including some experimental changes to the moderation
  of comments and nodes.

- made the front page of the system configurable. Now any <node>_page()
  can be set as the default page. Default is node_page().

- Fixed 2 typos in the user module.  Thanks Axel and Remco.
- Applied (modified versions of) Alexander's patches on the development
  branch.

- Fixed typo.

Extremely large commit:

- Fixed tiny quote problem in account.php.

- Fixed tiny bug in comment.inc.

- Fixed tiny bug in comment.module.

- Fixed tiny bug in meta.module.

- Simplified user_access() API.

- Rewrote link system: still needs fine-tuning and testing so don't
  upgrade if you are running a production site. ;)

  Updated all modules and themes to reflect this change.  All other
  themes and modules need updating too!

- Added a brand-new access.module which allows you to manage 'roles'
  (groups) and 'permissions' ... (inspired by Zope's system).

    + Once installed, click the help-link for more information.

    + See updates/2.00-to-x.xx.sql for the SQL updates.

- Modified loads of code to use our new access.module.  The system
  still has to mature though: new permissions have to be added and
  existing permissions need stream-lining.  Awaiting suggestions.

- As a direct result of the new access system, I had to rewrite the
  way the top-level links in admin.php are rendered and displayed,
  and xhtml-ified admin.php while I was at it.

TODO

- Home-brewed modules need updating, home-brewed themes not.
  (Examples: file.module, trip_link.module)

- As soon we *finished* the refactoring of the user system (KJ has
  been working on this refactoring already) we should consider to
  embed this role and permission code into account.module ...

Oops, a rather large commit:

- Changed meta.module, node.module and index.php to use comma-seperated
  lists of attributes rather then "foo=a,bar=b" lists.  This makes it a
  a lot easier to use both modules.  In addition, error handling can be
  discarded as it can't be made any simpler, really ...

  It fits rather nicely in Drupal's design so I'm getting more and more
  happy with this meta.module (but we are not 100% there yet).

- node.module, node.inc:

   + Improved the node-related admin interface so that navigating back
     and forth the administrative menus is made both easier and faster.

   + Removed some redundant database fields from the node table.  See
     2.00-to-x.xx.sql!

   + Added 2 news hooks called "node_insert" and "node_update".  Just
     like this is the case with the existing hook "node_delete" these
     new hooks will automatically get called when a node has been
     inserted or udpated.  Note that this is an optional call-back that
     only needs to be implemented when required.  With the addition of
     these two hooks, the node mechanism (version 1) is pretty well
     completed.

- watchdog.module:
   + Fixed bug whit the 'regular messages' query in the watchdog.module.

- book.module:
   + Fixed bug in book.module: the 'parent' was not set properly when
     updating a book page.
   + Made it so that older versions of a book page are automatically
     reactived upon deletion of the most recent version, i.e. when
     doing a version roll-back.

- comment.inc:
   + Undid Remco's patch to comment.inc; it does not work in some cases.


- conf.module:
   + Fine-tuned some of the options in conf.module a bit.

- marvin.theme:
   + Visual changes to make it look better on Windows browsers.  Mind
     to give some feedback on this?
   + Fixed 3 HTML typos/bugs.
   + XHTML-ified the theme at a best effort basis; I didn't carry the
     XHTML specification with me.
   + Made use of the theme_slogan variable to display the site's slogan.
   + As soon we have at least one valid XHTML theme we can wonder on how
     to integrate other XML namespaces (cfr. MathML story at drop.org).

- database.mysql:
   + Updated database.mysql so that it contains all the latest "database
     patches".