(feat) Reimplement CustomButton.js as ButtonView.js to support images
(feat) Move bounceback animation from ButtonView into CustomAnimations
(feat) Simplified ButtonView
(feat) Implement toggling nav buttons
(feat) Implement logic for title bar click; Change bottom nav bar backgroun to lt gray
(feat) Add icons for bottom nav bar
Merge pull request #82 from Jygsaw/dev

(feat) Update app styling; Refactor CustomButton into ButtonView to support styling changes