Use empty instead of isset, due REMOTE_USER should not be empty.

TagCloseElements conform to inherited expectations

Throwing an exception on request for an id or attribute breaks several
functions like $form->findPositionByAttribute.

See issue #1312

Fixed undefined error in html_denied()

don't delete valid translations #1384

sort admin plugins alphabetically

Sorting by the sort number is too confusing since those are assigned
independently by different authors

Prevent undefined error by checking on slen

Fixed undefined errors

Undefined offset, initialize as null

Fixed undefined offset on $last_ope

update Creative Commons licenses to 4.0. fixes #1286

https://wiki.creativecommons.org/wiki/License_versions
https://wiki.creativecommons.org/wiki/Frequently_Asked_Questions#Why_should_I_use_the_late

update Creative Commons licenses to 4.0. fixes #1286

https://wiki.creativecommons.org/wiki/License_versions
https://wiki.creativecommons.org/wiki/Frequently_Asked_Questions#Why_should_I_use_the_latest_version_of_the_Creative_Commons_licenses.3F

show more ...

translation update

translation update

* Fixed identified issue with button spans by replacing missing closing span tag as identified by selfthinker, removed in ae61441.

Fixed several undefined errors.

* Changed the flow of the navigation button HTML so the navigation buttons actually flow to the right.

translation update

translation update

translation update

translation update

translation update

Release preparation

translation update

translation update

translation update

rtl styles for media manager. Requires also rtl depended change in javascript..

handle 'e' set a resize handle at east side, 'w' at west side.