Improved DROP SEQUENCE command.
Fixed uninitialized value error.
Code cleanup.
Bug #10155

backup.pl doesn't compress database dump on non-MySQL-dumps
Fixed: backup.pl doesn't compress database dump on non-MySQL-dumps (bug#10155).
Fixed bug#10188 - Inconsistency in graphical ACL editor.
Fixed date.
Fixed bug#10178 - Stat Permissions.
Follow-up for bug#10079 - deleted json.js.
Fixed: No LinkOption in CustomerNavigationBar.dtl (bug#10179).
Merge branch 'master' of git.otrs.com:otrs/otrs
Fixed "Auto-reply to ticket entered via Web interface is sent with all lines concatenated to one" (bug#9276)".

Conflicts:
	CHANGES.md
Corrected changelog entry positions.
Fixed bug#10120 - Management Dashboard: page reload erases stat graph settings.
Added test case for bug#9989.
Merge branch 'master' of git.otrs.com:otrs/otrs
Added test case for bug#9989.
Fixed bug#10176 - available columns selection in search result view is not scrollable.
Minor optimization at the level of source code for a new ticket by mail.