Report additional warnings if the config.php is a read-only file (we can't change many things like theme, error-reporting, etc...)
(cherry picked from commit 5c2d2ad)
Adds slingbar 'bottom' feature to newui slingbar, but can only be changed in site configuration, not via drag/drop [#1194 state:resolved milestone:2.3.1 responsible:dleffler]
(cherry picked from commit c849d1e)
Updates text documentation, linkifying references to other text documentation for easier navigation on github
(cherry picked from commit 92f3fa9)
Fixes regression bug where checkboxes were either all checked or unchecked because state was based on 'value' param instead of 'checked' param; change manage group membership view $user param to $grp_user  to avoid conflict with global $user for current user.
(cherry picked from commit 373e48b)
Problems with some missing or extraneous quotes
(cherry picked from commit 390f35a)
Adds missing param initializer for backwards compatibility
(cherry picked from commit 14d3427)
Negates last push of missing param initializer for backwards compatibility
(cherry picked from commit 7e46281)
Fixes an extraneous quotes issue in TwitterController
(cherry picked from commit 08b9c81)
Fixes another extraneous quotes issue in TwitterController view
(cherry picked from commit 42878f7)
Fixes newu (not bs3) bottom slingbar drop-down submenus to drop 'up' and not be transparent [#1196 state:resolved responsible:dleffler]
(cherry picked from commit 66546a8)
Removes some badly commented code in facebook module showall views
(cherry picked from commit b3b0bd9)