Issue #60. Fixed.
Merge branch 'master' of https://github.com/RFO-BASIC/Basic.git
Issue #59. Fix Nexus 7 shortcut problem. Fix filePath = "" shortcut problem.
Creating test APK, Basic_1722.apk, for testing shortcut fixes.
Issue #59. The sledge hammer to stop crashes upon shortcut back key. Creates test release 1.7203