bug fix: empty string is not numeric
+ more robust settings handling
fix glide ratio fragment (save/restore state)
change in modular layout
bump version number
unused files
fix livetrack24 server URL
refresh config file after upgrading to android studio
pilot/glider/glider id info
refresh version according to playstore package
Merge remote-tracking branch 'dkm-origin/master'

Conflicts:
	.idea/misc.xml
	GPSLogger/res/xml/settings.xml
	GPSLogger/res/xml/skylinessettings.xml
	GPSLogger/src/com/mendhak/gpslogger/common/Utilities.java