Fix for "editor gets grayed out" issue

The editor activity's root view is a ScrollView with fillViewport=true.
The issue happend when the content didn't have enough height to fill the scroll
view.  So it's not really related to the IME; it could easily happend on the
portrait as well.

Change-Id: I2e656efb665ab8ad688d6645924eb61f2ffe35cb
1 file changed