Fix date format to japanese format.
Add placeholder when no code or guild for user. Fix #16.
Improve display when no code.
Fix bug in battle_controller.
Add code to gladiator. Add functionality to save code on server during battle.
Add autobackup functionality for battle codes.
Make small refactoring in battle_controller.
Fix languages_chart.
Add .python-version for pygments.
Add tabs to profile page.
Add google analytics.