Fix last modified dates in settings and lexicon grids + lexicon grid / filter combos improvements
Outsource date formatting of last mod dates to ExtJS instead of PHP to ensure localization
Change  back to  to not run into the risk of PHP strict warnings
Consistent method names are something good...
Removed unnecessary default property in settings/getlist.class.php
Remove new lexicon string for not_modified and adjust JS return on empty
Replacing normal dash with em dash for not modified cells
Put result limiting after query filter + cleanup
Merge remote-tracking branch 'upstream/pr/11767' into pr/11767

* upstream/pr/11767:
  Put result limiting after query filter + cleanup
  Replacing normal dash with em dash for not modified cells
  Remove new lexicon string for not_modified and adjust JS return on empty
  Removed unnecessary default property in settings/getlist.class.php
  Consistent method names are something good...
  Change  back to  to not run into the risk of PHP strict warnings
  Outsource date formatting of last mod dates to ExtJS instead of PHP to ensure localization
  Fix last modified dates in settings and lexicon grids + lexicon grid / filter combos improvements