samples issue-99: Fixed layout issues in CollectionView, where the sizing was not correctlly being initialized.

issue-650: Fixed issue where NavigationBar.backButton would incorrectly be laid out when caching view controllers.

Change TextField's visibility icon behaviour in order to match more Android EditText's one

* add visibility off material icon, toggle animation between visibility on and off icons and ripple, much more similar to Android's original EditText
* remove font change because it would eliminate any custom font when changing visibility the first time

Allow tabItem to be overwritten

Fixed layout issue, where the calculation of the layout item was not being set in the current render cycle.

Align Line on TabBar on bottom of scrollView on X

issue-933: Fixed issue where NavigationDrawerController was not displaying the leftViewController and rightViewController.

issue-940: Fixed an issue where the TransitionController was not executing the lifecycle functions for the initial rootViewController.