Renamed DataProcessor to DataConsumer
Moved subscription code from SenseService to separate
SubscriptionManager class
Made adding/removing subscriptions a synchronized operation to avoid
multithreading issues
Refactored subscription code, see issue #65
Refactored BaseDataProducer to use regular Lists instead of Vectors and
AtomicReferences
Shut up excessive logging from scheduler
Fixed concurrency issues in SubscriptionManager and BaseDataProducer
Merge branch 'develop' into fix_subscriptions

Conflicts:
	sense-android-library/src/nl/sense_os/service/ambience/TemperatureSensor.java
Fixed possible concurrency issue when iterating over the list of
producers and consumers
Merge pull request #68 from senseobservationsystems/fix_subscriptions

Fix subscriptions