Use true/false instead of 1/0 for bool

Change-Id: I0080ab942b21cea5c6c53a338f4d1ec1b88fa408
Reviewed-by: Caroline Chao <caroline.chao@digia.com>
Accessibility: Make back arrow a button

Change-Id: Ibd873e3583256e0bc95462a2b2009f814817c760
Reviewed-by: Caroline Chao <caroline.chao@digia.com>