Changes to launch
Added iOS icon
Stopped user scaling
Merge branch 'refs/heads/master' into launch

Conflicts:
	app/views/purchases/overview.html.erb
Removed bloody Tower f'up
Twilio is implemented for SMS notifications of when items are needed/bought and payments marked as completed + Added delete payment button
Mocked up HTML for being able to choose who an item should be shared with + Added selectize, nice plugin to do the autosuggest for item names
Little easier to mark items as bought or needed because names are now case insensitive (should show as the first name ever used for that item)

With the upcoming autosuggest improvements this should address the issues where duplicate items are being created