metamer: method for testing delays introduced, some tests for delays refactored.
metamer: added methods for testing status, render, limitRender
fragments + metamer: new tooltip fragment
ContextMenu & DropDownMenu page fragments refactored

* invoke renamed to show
* dismiss renamed to hide
Page Fragments refactoring waiting API

* provided a methods for setting custom timeout in the waiting API
Showcase for each fragment added

* dummy class which is not runnable for each fragment added
* it just showcases the high level API of each fragment