* User::getRights(), User::isAllowed() and User::getGroupPermissions now optionally accept a namespace parameter. If not set, it will check whether the user has the right for all namespaces.
* Anything that uses Title::getUserPermissionsErrorsInternal() automatically supports per-namespace permissions. This includes Title::getUserPermissionsErrors and Title::(quick)UserCan.
* Fix tests that set User::mRights
The next step would be to change all User::isAllowed() to Title::quickUserCan or pass the namespace to User::isAllowed().
* 'editfont' => 'sans-serif'; -> trivial (can be set in CSS)
* 'underline' => 0; by languages written in scripts that are hard to read with underlines -> now set in shared.css, which makes it work also when they are used as interface language (note that [lang="xx"] is not yet present on wikitext content by default but will be soon as part of my work on RTL improvements)
* 'quickbar' => 2; by RTL languages. For this, I introduced a new option (5) that sets left/right according to the directionality of your interface language (and automatic is better than setting it in MessagesXx files!). Note that the broken feature was in this case "corrected" by CSS flipping, causing preferences to say "left" while it was actually "right". This commit fixes that bug as well.
Third, it actually would have made more sense to have it them load for wgLang instead of wgContLang, but that's not possible because wgLang is itself dependent on preferences
** Made addAutopromoteOnceGroups() put in a user rights log entry
** Added APCOND_ISBOT cond to autopromote and updated some docs
* FlaggedRevs:
** (bug 24948) Made $wgFlaggedRevsAutopromote a wrapper around $wgAutopromoteOnce and removed maybeMakeEditor()/recordDemote() (uses r90749)
** Split off new efSetFlaggedRevsOldAutopromoteConfig function
** Removed calls to FlaggedRevs class in setup function to avoid overhead
** Made cache keys in checkAutoPromoteCond() properly unique
** Made wasPreviouslyBlocked() protected and tweaked editSpacingCheck() param order
** Tweaked addAutopromoteOnceGroups() calls for performance
** Some doc tweaks and fixes
* Added NS_SPECIAL short-circuit on $wgTitle for file cache and removed unnecessary "is null" check
* Pushed "$action != 'raw'" check into HTMLFileCache
* Removed useless return value from performRequest()
* Added type hint to performAction()
* Removed clunky autopromoteOnceHook function and added $wgAutopromoteOnce. It currently supports edit or view based triggering. This makes configuration much simpler.
* Added short-circuit to addAutopromoteOnceGroups() by checking if $criteria is empty
* Spacing tweaks and typo fixes.
Severly limit the number of calls that actually update the database (for no gain!). Leaving stuff that needs to update memcached
Still, there's probably quite a lot of these calls which are still superfluous
