Solved deprecated sizeWithFont:constrainedToSize

Solved deprecated sizeWithFont:constrainedToSize
Solved warnings of const to NSString
Solved warning when using int in nslog

Added only show the swipe hint view if swipeToDismissEnabled is true
![new-layout-mpg](https://cloud.githubusercontent.com/assets/5465182/3728321/f4501240-16a8-11e4-836c-23f4a1a44993.png)