Optimised EditableTextInputsInView(UIView *view) function to improve performance
Optimised selectAdjacentResponder: function to improve performance
added UIToolbar appearance selectors and modernised code
adds a delegate and protocol to know when next or previous button are clicked
Merge commit '6a2b9391438109f3c3f5113ede9664238f67ea27'

# By Trystan Pfluger
# Via Trystan Pfluger
* commit '6a2b9391438109f3c3f5113ede9664238f67ea27':
  added UIToolbar appearance selectors and modernised code
  Optimised selectAdjacentResponder: function to improve performance
  Optimised EditableTextInputsInView(UIView *view) function to improve performance

Conflicts:
	XCDFormInputAccessoryView/XCDFormInputAccessoryView.m
remove unnecessary warnings