Prepared 1.1.1 release

Updated CHANGELOG
Removed buttons from the loading layouts (we couldn't set PendingIntents on them anyway, so they were useless)
Changed the widget minimum dimensions to closely fit on the grid with a minimum dimension of 4x2 and a standard dimension of 4x3
Closes #28
Tweaks to the refresh toast

A couple of refactorings
Updated CHANGELOG
Finish 1.1.3