$ Adding Czech cs-CZ to installation language files
Fix failing system tests from markup changes.
 ^ [#31134] *Improving Content Languages edit and manager. Thanks
Benjamin Trenkle and Roland Dalmulder
 # [#31147] *Install sample data None does not display tooltip.
(fix #1269)
 # [#31108] Fatal erorr right after install. Thanks Klas and Michael
Babker
(Fix #1244)
 # [#30354] Invalid Javascript Redirect in JApplication::redirect() when
headers have already been sent. Thanks Ben Tasker.
(Fix #867)
 $ [#26548] [patch] incorrect error check in menus.php. Thanks Rob
Clayburn and Ben Tasker
(Fix #1012)
 # [#30779] Fatal error in single contact category list if category is
unpublished. Thanks Elin Waring.
(fix #1080)
 # [#31122] archived articles module shows multiple entries same month.
Thanks David Hurley.
(Fix #1250)
 # [#31128] Double category description newsfeed categories. Thanks Rob
de Cleen and David Hurley
(Fix #1251)
 # [#30150] com_content loads articles before error checking. Thanks
Richard McDaniel.
(Fix #739)
 # [#29424] Multilevel select collapsed. Thanks Sergey Romanov.
(Fix #1119)
 + [#31130] Added js files to protostar template and modified index.php.
Thanks Buddhima Wijeweera
(Fix #1254)
 # [#30576] $isNew not being passed to onContentBeforeSave. Thanks
Elijah Madden
(Fix #988)
Fix CS warnings, general cleanup in same files