Move the search widget into the consolidated charmbrowser view

This branch moves the search widget into the consolidated charmbrowser view. 

#### Note
After this branch lands you will be REQUIRED to use the `il` flag until it's completely removed as some changes in this branch were too much work to implement just to keep the flag working for a few more days.

#### To QA
Use the `il` flags
This branch moves the search widget so do a deep exploratory QA with the search widget and charmbrowser code.