adding infrastucture for two fingers detection. Issue #252
adding configuration for consuming two-fingers swipe. #issue #252
moving from hard-coded-in-source-code pref keys and values, to string-resource values. A part of issue #243 maintainability.
implementing Phablet mode, and UX. issue #243. Not quite done yet
revisiting the condensing factor, to be more realistic. Issue #243
added initial condense state setting to the UI. Issue #243.
better response to scale operations (pinch)