Few fixes
- Moved SecureElement PP to dom/secureelement/gonk
- Remove files from system/gonk
- Moved all the logic of state handling to DOM (isClosed, type, isSEPresent)
- Refactored handling of DOM requests very well in SecureElement parent proc
- Add 'notifyAllTragetsOnSEChange'
- Abstracted further the handling of 'child process shutdown'. Ensured that
  uiccConnector does not handle 'message manager' part of functionality
- Make 'iccProvider' & 'uuidGenerator' a private service to respective objects
- NIT fixes

Change-Id: I9d523d0002326f9443dd256fe3eeaf8b10c4532b