Bugfix & features for 'mod interrupt' moderator bb-codes (stop/alert/information/warning)
Fix that SVG's would not be generated correctly when the site is in release mode
Add "Mod Interrupt bb-code: Moderator only rendering" option allow stop/alert/information/warning to be rendered for non-moderators while not adding these to the editor
Add additional css classes to bb-codes (mod_interrupt--staff-threadmark/mod_interrupt--is-moderator)
Add logging when parse_less_func template helper function encounters errors instead of swallowing exceptions. To generate XF error log entries, use parse_less_func('expression', true).
