fixed droneshare uploader service issues:
- fixed issues with uploader service notification handling.
- improved network connectivity receiver/detector based on http://developer.android.com/training/monitoring-device-state/manifest-receivers.html#ToggleReceivers
fixed localization issues.
Merge branch 'master' of https://github.com/DroidPlanner/droidplanner into fix_uploader_service_connectivity_detection
Merge pull request #920 from ne0fhyk/fix_uploader_service_connectivity_detection

Fixes issues with Droneshare Uploader service