Removed "Device not enabled, yet" dialog for new devices.

Background: the free version is now limited to 2 allergens, so there no
longer is a need to restrain the user in other ways.
added network info button to synchronize activity,
improved network error handling
Merge branch 'devel' into no-device-blocking

Conflicts:
	gen/com/srsoftware/allergyscan/R.java
altered network exception handling
altered first-time downloading of allergens:
now done blocking
removed synchronization after containment update:
autosync locks the database, which may in turn lead to an app crash when
another item is edited and the app tries to write to the database
Merge branch 'devel' into releasecandidate2

Conflicts:
	src/com/srsoftware/allergyscan/AllergyScanDatabase.java
	src/com/srsoftware/allergyscan/LearningActivity.java
	src/com/srsoftware/allergyscan/MainActivity.java
	src/com/srsoftware/allergyscan/RemoteDatabase.java