Merge hotfix-adjust-buttons-on-front-page (#31) into stable

Make buttons explicit on front page.

Clarify the meaning of 'subscribe' by extending the message and move
icons to the left of the button.
Test: skip joins for travis bot.

This will prevent the bot from entering and
leaving the #ieee channel (minimizing the amount
of spam it generates).
Travis: Update URL for build status image.
Merge branch 'stable'
Base: upgrade navbar.
main.css: Remove old css.
base.html: Remove brotatos' credit.
Use font awesome.
index.html: Fix label.
Add padding to body in order to prevent the navbar from overlapping.
Fix front page columns.

Adjust container width to 800px.
Adjust subtitles of projects.

Make them bigger and bold them.

This is merely for clarity.
Projects: row-fluid -> row.

Bootstrap 3 no longer uses "row-fluid" to denote a
responsive grid.
Fix projects page.

Update descriptions as well.
Fix registration form.
Fix login form.
register.html: Add spacing between captcha and other fields.
Login: Add spacing between button and link to register.
Merge upgrade-to-bootstrap-v3 (#32) into master

Upgrade to bootstrap v3.0.

This will update the CSS to bootstrap v3.0.

This will also update the forms to use the new bootstrap fields.

This only uses fontawesome as well now (no more glyphicons).
Adjust front page columns.

Add both large and medium sizes explicitly.