[LinphoneHandler] Code Cleanup: added some finals
[MainActivity] Code Cleanup: added some finals
[ConnectionDetailsActivity] Code Cleanup: added some finals
[SimlarService] Code Cleanup: added some finals and privates (tscharlii, ben)
[libphonenumber] updated to version 5.9
Merge pull request #68 from simlar/libphonenumber-update-and-codecleanups-pullrequest

Libphonenumber update and codecleanups