BT: added READ_PHONE_STATE & WRITE_SYNC_SETTINGS to manifest. 

Stack overflow said it might work to resolve java.ioexception when
writing to bluetooth sockets
http://stackoverflow.com/questions/3442800/android-bluetooth-software-caused-connection-abort-ioexception
Deleted the ConnectionService's service code from the manifest
ConnectionService: Possibly fixed java.ioexception error that was
received when reading from inputstream via kryo.

Changed writeObject() to writeClassAndObject().
ConnectionService: Tidied a bit in sendMessage()
ConnectionService & Connection:
Deleted all references to package name and app name. They're not
nescessary when it's no longer a service and only one app can use them
at a time.
Also cleaned some code.
More remnants of the previous commit tidied
Tidied code in Connection.class
Merge branch 'MulticlientsSansService' of
https://github.com/tortal/IT2-LP1-Tendu.git into MulticlientsSansService

Conflicts:
	Tendu-android/src/it/chalmers/tendu/network/clicklinkcompete/ConnectionService.java