Updated aimerger for AI2
Save original version of aimerger, while creating the aAI version
Add "for App Inventor 2" to title screen when aiMerger runs
Make small changes in response to review

Change-Id: I582563355237389fe37d6b84b257d1a6a5dbe00d
Add initialiation to location sensor to come up correctly when enabled.

Change-Id: Id4ebd7af0a26d7fb4cb49b34d74f816ff8f83e1d