Activities page
Activity log
* Refactored code a little bit
* The display of commits is grouped on a per-author mode on a daily
* basis.
* For every day, all the commits under one author are listed under a
* single group in order to avoid repetition of avatars.
* Now has a separate link and it is tucked away under "Contributors"
* part.
* Shows 50 commits by default.
* Shows gravatars of the committers.
* No longer inside the side-nav element
* Spacing changes
added gemfile.lock for heroku push