Added github maven repository.
Added dependecy management.

FeaturePipeline now exports to local and github maven repositories
AndroidSensorCollector Imports these dependencies
Unifying FeaturePipeline and SensorCollector

Activity Recognition is done in server/FeaturePipeline porject and imported 
into Sensor Collector
Encapsuled HarPipeline
Created new HAR Package.
Import HAR module from SensorCollector
Debugging TimedQueue and WindowProduces
Deployed new decision tree
Added "Delete All Samples" button.
Merge branch 'feature/deleteSamples' into feature/Packages
Merge branch 'feature/Packages' into dev