Merge pull request #231 from argelius/v1.1.x

Fixed bug where all the modifier of the last button in a toolbar overrid...
Merge commit 'ae5314a665c357b8892e2996ccfa7808da551b94' into v1.1.x
Updated version to v.1.1.5-dev.
Trivial fix.
Added Andreas as a contributor on package.json.
Added "simpleslide" animation to preset animations on NavigatorView.
Fix ons-icon directive cleanClassAttribute

add ionicons prefix.
Fixes issue where checkboxes and radiobuttons couldn't be toggled in iOS