Added alternative methods to create a button and iconLabelContextPanel
Added interactive zones functionality
Merge pull request #823 from gorco/interactiveZone

Interactive zone
Merge pull request #822 from RotaruDan/HSBcolorPicker

HSB slide color picker.
Added method to convert dp to pixels.
Merge pull request #824 from gorco/dpToPx

Added method to convert dp to pixels.
Adds ColorPickerPanel and improves SlideColorPicker.
Adds ColorPickerPanel svg and style.
Adds ColorPickerPanel UI test.