Added gzip persistor to sensor collector.
Added Annotations on Stop/Start of recording.
WIP
Added Gps Cache
Added file headers for compressed upload
Added Broadcast of GPS sampels
Moved published file to sdcard directory.
Multiple Changes:
* Debugging ZIP File Upload
* Added Activities
Reactivated GpsCache etc.
Added testing button.
Changed feature pipeline to work like the mobile client
Merge branch 'dev' of https://github.com/HeinrichHartmann/LiveGovWP1 into dev
Added switch for ZIP compression. Refactoring.
Adde dirs to .gitignore
Restored FeaturePipeline from dev branch
Merge branch 'APIExtensionSpiros' into dev
Added new J48 Tree
Working on Issue: Allow HAR without collecting samples.

https://github.com/HeinrichHartmann/LiveGovWP1/issues/26

* Added CommandPattern to register and unregister callbacks.
* removeConsumer now checks if consumer already present
Some refactoring of backend FeaturePipeline.
The pipeline now runs through all ids and tags. All the output will be in one csv for an easy import into weka.
Added the compiled FeaturePipeline jar to the repo