Revert "Hide labels, to be rendered as placeholders"

This reverts commit 06a6a7105db77968ebe88a75a0a630e06bed9ea5.
Upgraded to Bootstrap 3.3.1
Added jQuery 2.1.1
Move to Assetic for assets
Get Assetic to install fonts
Override 'Bad credentials' error message
Removed login stylesheet
Added offset classes to center form controls
Added some global form styling
Remove label styles, not using labels anymore
Update button classes
Use more bootstrap classes to render login form
Register form customisation
Chuck errors below form widget
Updated relative paths to fonts
Revert "Get Assetic to install fonts"

This reverts commit e927d2acf45e56f3d7662e1398cf425dd532251d.
Added glyphicon to error message
Render errors as Bootstrap alert boxes
Minimise space below form errors
No need for inline padding