* build-essential requires make, gcc
* remove libmysql++-dev: the mysql2 gem only requires libmysqlclient-dev
* remove postgresql-server-dev-9.1: the pg gem only requires libpq-dev
* replace python-dev, python-pip with python2.7: the pygments.rb gem only requires python2.7

Update pygments.rb

Fixes #1774

Fix for #1612 `overflow: auto` so content won't break layout

Devise locale updated to stay consistent with GitLab

add help page for gitlab specific rake tasks

remove unnecessary API::VERSION constant

Refactored profile to resource. Added missing flash notice on successfull updated. Update username via ajax

refactor flash

commit diff - check if prev_commit is not nil

remove length limit from notes

* make unobtrusive js
* convert js to coffee