Use JLayouts
Layout files
tags layout
default file
Add JLayoutHelper
Fix two regressions
Merge remote-tracking branch 'joomla/pr/814'
[#29891] Begin using reusable layouts
 # [#30121] Save as copy does not work in com_weblinks, com_contacts,
com_newsfeeds. Thanks Lemings
 # [#30267] *Modifying constant in logged in module (back-end)
 # [#30190] allow string-based input fields to use the "multiple"
attribute. Thanks Randy.
 # [#30305] Correcting the similar tags module. Thanks Elin
 # [#30264] AJAX field for tagging. Thanks Roberto
Alpha ordering tags ini strings across files.
[#30262] Add PostgreSQL schema for tags, sync with MySQL, update script additions
Code style fixes
[#30251] Add single tag feed view
Updated AJAX tags to use language file
[#30256] Error in field mapping for contact
Added to minified version and to library html formbehavior