Check duplicate linked problem, translate the message
Extract CATS::Stats module
Translate 'compare_tests' page
Update maintatner's email
Whitespace fixes in judges page
Move references_menu sub to Misc.pm
Extract Judges.pm
Security: require root access to delete judge
Refactor judge editing. Use 'new judge' message
Use loop variable in console output
Refactor console template, use more CSS
Fix console item type filter after pressing 'Search' button
Translate 'judges' page
Refactor Judges.pm: merge 'new' and 'edit' code
Translate 'judges_edit' page
Remove unneeded fields judges.accept_contests anf judges.accept_trainings
Add 'test_diff' page