Fix shadow offset by doing custom paint of text items when not editing. As a...

Fix shadow offset by doing custom paint of text items when not editing. As a side effects, on some fonts there is a vertical offset when editing, but it's only when editing.
There is still a 2 pixel vertical offset between Title Widget and real render that will be fixed by an upcoming patch in MLT
Also fixes a bug where creating a rect over a title moved the title
CCBUG: 364584