Moving examples to iframe.

Having examples inline with the ngdoc application severly limits what
examples can be added as example styles and scripts may conflict with the
ngdoc-application styles and scripts.

Moving examples to iframe for greater control.
Adding suffix to class names generated from method and property names.

CSS classes generated from methods and properties can potentially collide with
reserved CSS classes (e.g. bootstrap classes). Adding a suffix to method
and property CSS classes to avoid this.