Styling updates.
Updated Bootstrap version.
Added jQuery and Bootstrap.js.
Added navbar and move login stuff there.
Added back custom variables.
Added required variables from new version of Bootstrap.
Moved JavaScript to the bottom of the page into "js" block.
Removed bottom margin from navbar.
Merge remote-tracking branch 'gentlecat/style'

* gentlecat/style:
  Removed bottom margin from navbar.
  Moved JavaScript to the bottom of the page into "js" block.
  Added required variables from new version of Bootstrap.
  Added back custom variables.
  Styling updates. Updated Bootstrap version. Added jQuery and Bootstrap.js. Added navbar and move login stuff there.