mondrianwifi: LatinIME: Fix portrait mode preview Views

Tune the transient test based on our lcd_density and screen size.

Change-Id: Ia35bdfbd785198c407d38b0866d8de2250e56725
mondrianwifi: Remove unused (telephony related) overlay

Change-Id: I909da816474d95b1ff73896e85642d2283f873a4
mondrianwifi: Add tablet recents & rotation lock overlays

Change-Id: I41088f491aeebd63725003566d8a721f7f6e63a3
mondrianwifi: lockscreen rotation should always be allowed

This appears to be a tablet users' expectation given the screen
size.

Change-Id: Ibaeff1034253a79d04739284000ece5b4f603cce