Display exercises available for nitpick in language track order #1720
Merge pull request #2108 from code-R/2091-nitpick-exercises-in-language-track-order

2091 nitpick exercises in language track order
Extend custom alert classes with bootstrap styling

This allows custom alert classes such as:
  .alert-notice
  .alert-error
  .alert-alert

To be styled by bootstrap as though we were using the standard classes:
  .alert-info
  .alert-danger
  .alert-warning
Merge pull request #2110 from bluerogue251/fix_mute_flash_message_styling

Fix flash styling
Use problem slug rather than relying on related exercise
Refactor stats page for clarity
Don't require login to look at stats
Add irc channel to README
Fix typo
Merge pull request #2111 from seanhussey/patch-1

Fix typo