POM fix

Signed-off-by: Matthias Stevens <matthias.stevens@gmail.com>
- Refactoring of all file (storage) related code:
   * introduction of FileStorageProvider class to manage (almost) all path generation/resolving and folder creation (leading to less dependence on CollectorApp and Project classes)
   * Android specific subclass of FileStorageProvider (AndroidFileStorageProvider) handles transparent creation of .nomedia files
   * introduced FileStorageException and subclasses to replace StorageStatus enum
   * some error msg improvements (although it may be a bit long now)
   * NEEDS TESTING!
- Finalised ProjectRecordStore (still needs testing though)
- Removed support for loading projects from bare XML files (if attempted nice message lets user know this is no longer possible) - needs testing
- Renamed AudioToVoice to AudioPlayer, now used for all sound file playing (removed similar code from DeviceControl)

Signed-off-by: Matthias Stevens <matthias.stevens@gmail.com>