Fix failing system test.
 + [#29945] Joomla administration shows the Name of the author, not the
User Name. Thanks Stefania Gaianigo
(Fix #1266)
 $ [#31176] Change the Language String for the Language Keyword
INSTL_ADMIN_USER_DESC. Thanks Ilagnayeru 'MIG' Manickam
 # [#31158] *Multilanguage: Editing an article in frontend deletes its
associations. Thanks Benjamin Trenkle.
 # [#31184] *Multilanguage: Frontend article edit may break when using
associations.
(Fix #1297)
 # [#31189] Some fields are missing from the tags edit screen. Thanks
Elin Waring
(Fix #1299)
 # [#31167] Add class="btn-group" for hathor Options. Thanks Tobias
Zulauf
(Fix #1286)
 # [#30751] No image for Tag Component at the template Hathor. Thanks
Andrea Tarr and Ulrika Hall
(Fix #1298)
 $ [#31173] Only default/global Filter Label for seach at the Extensions
Manager. Thanks Tobias Zulauf
(Fix #1289)
 # [#31175] More text as we need at Text Filters. Thanks Tobias Zulauf
(Fix #1290)
 # [#31125] Category images don't show in Categories list. Thanks David
Hurley
(Fix #1279)
 # [#31166] Undefined property: JTableCorecontent::$metakey. Thanks
Fedik Zinchuk
(Fix #1285)
 # [#30756] Blog layout has duplicate elements with "icons" ID. Thanks
David Hurley.
reverted small unwanted change
[#30479] Cleanup of unused variables (Fix #950)
PHPCS cleanup of com_finder
Fix Webdriver tests for Google Chrome, markup changes.