FIXED; camera, pick contact, callPhone changes

xml target version updated to correct version
read contacts permission added
static finals changed to char type to reduce size
refactored (un)selectedTabColor
reduced onPictureTaken() to call startImagePreview() only
startImagePreview() does all bitmap creation, scaling, setting
iv_previewImage, adding preview view to LL
callPhone() added with traps for 911 calls (lets avoid that)
onActivityResult() redone: Pick_Contact reqCode, gets uri, sets cursor,
reads info, callsPhone