adds .button-primary to *Add row/group* button
tabs to spaces for better alignment
makes regular-text field 100% width in postbox, bg-color for group title

also improves borders display a little
generated css
slightly different group-title margins for postbox and other places
converts add-row link to button (<a> -> <button>)
Merge branch 'master' into styling
limit repeatable row table display to postbox container
Resolve issue with hiding field names

Hide field names unless they're titles.
Add collapsable header to render group
Insert the correct title on ajax
Update minified js
Merge branch 'master' of https://github.com/cluke009/CMB2 into cluke009-master
Add ajax toggle
Update css for new groups
Add group-title class back in
Fix sidebar width

Trying to avoid the use of box-sizing. What IE version does WP support?
changed first-child -> first-of-type, last-child -> last-of-type, see #33
Merge branch 'master' of https://github.com/WebDevStudios/CMB2 into styling
merge upstream