added follow category styles
added old bootstrap buttons
updating gems
css updated
Merge pull request #974 from thiagocatarse/bootstrap

Bootstrap
fixing error display when we have an error selecting reward in new contribution page
copy fixes from in contribution faq box
hide payment method tabs if we have only one payment method
copy correction in payment method names
using fixed height on payment tabs to avoid browser jumping when we change tabs
made tabs smarter detecting changes without relying on the content
added loader for tabs for first tab load
now we show the tab loader on the first load
fixing payment method container height for mobile views
copy tweaks
updated catarse_moip and catarse_pagarme with review form tweaks
changed required field style to semi-bold and removed the *
fixing default user avatar
updated pagarme gem
fixed specs