Includes:
* update checker refactored to \core\update\ namespace
* plugininfo classes refactored to \core\plugininfo\ namespace
* plugin_manager renamed to core_plugin_manager
* redirect back to original page after plugin uninstall
* fixed assign subplugin uninstall
* move assign subplugins under the assignment in admin tree
* fixed plugininfo for all question related plugin types
* auth uninstall support
* added missing block dependencies
* added theme uninstall
* subplugin types are following the plugin on plugin overview page
* several performance improvements in plugin manager
* new warnigns when plugininfo are outdated or missing
* multiple fixes and other improvements
* Fixed typo breaking drag and drop of courses.
* Fixed the ' ' title for the create new button plus two other icons I found as well.
* Adding padding to items displayed in the action menu drop down. base + bootstrapbase.
* Padding adjusted to the same as on the course page. base + bootstrapbase.
* Removed hover icon from categories. base only.
* Fixed categroy typo
* Removed min-width that was being applied to coursename making its clickable area larger than normal.
* The category tree is now presented using aria attributes as per http://www.w3.org/WAI/GL/wiki/Using_ARIA_trees
* Bulk action selectors now use aria-labelledby
* Category course count now given access hidden label.
* Pagination links now have better titles.
* The course action icons now present with role=button
* Tidied up course detail permissions so that user is not shown information they couldn't access elsewhere.
* category link dimming now accounts for course creation as an action as well.
* category single select when in courses view mode is now limited to courses user can action in.
* There is now a check at the start of the management page to redirect to course/index.php if the user isn't able to manage in any category.
* Tweaked navigation again, to give the limited users a navbar structure similar to the system cap'd user.
* Cancelling a category delete now takes you back to the category you were viewing.
* Fixed undefined notice
* Improved placement of course request and approval links.
* Several styling tweaks/improvements to the base theme.
* Several styling tweaks/improvements to the bootstrapbase theme.
* Navigation/settings now show best available option.
* Resorting categories works now for limited access user.
* Display of up and down arrows corrected.
* Checkboxes no longer displayed if an action can't be performed.
