Renamed items associated with "if", "do" and procedure blocks.

More specifically,
* Renamed "do then return" to "do return"
* Renamed "if do" to "if then"
* Renamed procedure "return" to "result"

Change-Id: Ia4404b05db0dce15d29ae60e8ef9d15059bad69e
Fix for Roboto font on windows7 ie10 now loads

Change-Id: I698a40ad678543a8290b86c34073506d0d4fbba7
Issue 482 - component recategorization

Renamed component categories and moved components from one
category to another to make it easier for users to find what
they are looking for in App Inventor.  Please check issue 482
for additional information.

Change-Id: I49a5cda80d234e62a933662def5b4c72821e79a7