Added bootstrap3 classes to signup form
Updated javascript signup file
Updated js signup to be more change-resistant to DOM modifications
Wrapped input elements with spans, so the warning label will be inline
Fixed ZIP warnings and select list width
Updated customer fields & plugins with new layout
Fixed javascript validation of custom fields and plugins (subscribe button won’t change to valid state)
Updated subscriptions layout to BS3
Merge pull request #8 from akeeba/feature/bootstrap3

Added dual support for Boostrap 2 and Boostrap 3 HTML output