Issue #2946014: Removed [Vartheme] from Varbase core code, and have it as stand-alone theme

...s/vartheme/VARTHEME_SUBTHEME/less/base/vartheme.base.less

themes/vartheme/VARTHEME_SUBTHEME/less/component/README.md

...heme/VARTHEME_SUBTHEME/less/component/ajax.component.less

...eme/VARTHEME_SUBTHEME/less/component/alert.component.less

...THEME_SUBTHEME/less/component/autocomplete.component.less

...RTHEME_SUBTHEME/less/component/bs-callouts.component.less

...eme/VARTHEME_SUBTHEME/less/component/field.component.less

...heme/VARTHEME_SUBTHEME/less/component/file.component.less

...me/VARTHEME_SUBTHEME/less/component/filter.component.less

...heme/VARTHEME_SUBTHEME/less/component/form.component.less

...heme/VARTHEME_SUBTHEME/less/component/icon.component.less

...THEME_SUBTHEME/less/component/navbar.admin.component.less

...me/VARTHEME_SUBTHEME/less/component/navbar.component.less

...heme/VARTHEME_SUBTHEME/less/component/node.component.less

...ARTHEME_SUBTHEME/less/component/outside-in.component.less

...eme/VARTHEME_SUBTHEME/less/component/panel.component.less

...THEME_SUBTHEME/less/component/progress-bar.component.less

...ARTHEME_SUBTHEME/less/component/table-drag.component.less

...heme/VARTHEME_SUBTHEME/less/component/tabs.component.less

...e/VARTHEME_SUBTHEME/less/component/toolbar.component.less