Replaces Base class and injects DecorationView

Replaces the Base class with a module and where required the examples
table controller injects the DecorationView into various uikit dynamic
controllers.

Fixes some label issues.

Deletes base_view_conroller.rb.

Makes changes across the board to spec files to accommodate
DecorationView injection and yet maintain access to MacBacon tools like
view, drag and tap.

Adds the beginnings of the GravitySpringController spec tests.