fix typo
Changes button elements to links for help and options
Grabs a url for anchor links directly
replaces incorrect button group class with semantic class
Styles button toolbar and objects inc rtl layout styles
Deprecates unused empty divider div and removes calls in views
Sync Crypt, Data, and Date packages to Platform 13.1 (CS only)
Sync Environment and Event packages to Platform 13.1 (CS only)
 # [#31362] Various PHP notices and strict errors. Thanks Mark Dexter
 # [#31376] JToolbar layout change breaks mobile. Thanks Roberto Segura
Update from master CMS
Merge pull request #69 from nonumber/jux

Added Joomla update message button to top of page on control panel.
Form error per field + improve error message
Just correct a small typo in spelling of calendar.
 # [#31455] Regression by [#31278]. Thanks Beat (Fix #1536)
Merge pull request #1543 from Achal-Aggarwal/calendar-typo-error

To correct a small typo in spelling of calendar.
Add system tests for components and content. Thanks Puneet Kala.
 # [#31476] Remove unneeded GROUP BY and fix duplicate article display.
Thanks Thomas Hunziker
(Fix #1542)
 # [#31445] Default value tag menu-items. Thanks Constantin Romankiewicz
(Fix #1527)
Fix problem with failing system tests.