DO NOT MERGE lots of OTR debug statements
port basic tests from robo-tests/ to an Android Test Project

This is easily runnable using Eclipse, ant, and Jenkins.  It probably works
elsewhere as well, since this is the official way of running tests using
the Android tools:

https://developer.android.com/tools/testing/
add button to first launch lock screen to change language

This uses the globe icon that android-21/5.0/Lollipop uses to represent
"Languages & Input" in the Settings app.  It makes it a little button on
the initial version of the lock screen so that users can change language
on the very first screen that they see.
REBASE ImApp.setNewLocale uses new setLocale() method on >= android-17
REBASE add button to first launch lock screen to change language
purge unused menu from WelcomeActivity

Since WelcomeActivity no longer has its own visual representation, its menu
will also never be shown.  Therefore I purged all code related to the menu
to eliminate confusion.  If anyone ever needs it, it'll always be in the
git history.