Revert "Replace widgetBaseClass with widgetFullName"

Overwriting widgetFullName obviously breaks a lot of stuff.

This reverts commit 708a3406c7c4c559b8a6eccf4823647e2c087aa3.

Change-Id: I13e8a22501d8dd71a9786cf87c6f8d14404dd069
Merge "Revert "Replace widgetBaseClass with widgetFullName""