Issue #2493677 by nod_, dawehner, Wim Leers: JSDoc for misc/ files

core/misc/active-link.js

core/misc/ajax.js

core/misc/announce.js

core/misc/autocomplete.js

core/misc/batch.js

core/misc/collapse.js

core/misc/debounce.js

core/misc/details-aria.js

core/misc/dialog/dialog.ajax.js

core/misc/dialog/dialog.jquery-ui.js

core/misc/dialog/dialog.js

core/misc/dialog/dialog.position.js

core/misc/displace.js

core/misc/dropbutton/dropbutton.js

core/misc/drupal.js

core/misc/form.js

core/misc/machine-name.js

core/misc/progress.js

core/misc/states.js

core/misc/tabbingmanager.js