Nuke `TileView` ; use a tiled-layout mode instead.

[tig]

TileView is no longer needed. Instead devs can and should just use View.Arrangement.

To address this Issue:

• Delete the TileView example Scenario
• Refactor built-in Views that use TileView to use View.Arragnement instead
• Refactor existing Scenarios that use TileView to use View.Arrangement instead.
• Remove refernces to TIleView from all API docs and readme/.md files.