fix(ionContent): fix scoping with ngController

Fixes #1155
revert(test/css/tabs): undo change

Addresses #1166
scss(tabs): allow syntax with same tabbar to work
fix(tabs-item-hide): only hide tab nav items
test(ionList): makes ure it works with variable interpolation
chore(travis): make sure it always generates changelog from last release
chore(travis): s/--version/--from for changelog
chore(travis): make sure it uses tag name, not package.json name
chore(travis): change clone depth to 750
virtualScroll: non-full-featured version, to start testing
test(list-fit): update styles
demo(collection-repeat): add basic demo
demo(collection-repeat): make item height look better
demo(collection-repeat): add filter
fix(ionHeaderBar): do not tapScrollToTop for inputs

Fixes #1199
collection-repeat: enable grid functionality
collectionRepeat: fixes
demo(collection-repeat): contacts
collectionRepeat: rerender on resize
demo(collection-repeat): use min files