Removal BaseItemGrindFragement & support multiple pages(search).

I found out that the IGT & BIGT were basically the same.
There was only a slight difference: the activity context.

So I made a static boolean that will indicate which activity you are using.
Removed the docrouton method and the booleans on SearchActivity & the unneccerly BIGT.
The BaseActionBar is now using a static string for the query.