update copyrights for 2016

ring-android/app/src/main/AndroidManifest.xml

...c/main/java/cx/ring/adapters/AccountSelectionAdapter.java

...pp/src/main/java/cx/ring/adapters/ContactPictureTask.java

...d/app/src/main/java/cx/ring/adapters/ContactsAdapter.java

...rc/main/java/cx/ring/adapters/StarredContactsAdapter.java

.../src/main/java/cx/ring/client/AccountEditionActivity.java

...droid/app/src/main/java/cx/ring/client/AccountWizard.java

...ndroid/app/src/main/java/cx/ring/client/CallActivity.java

...pp/src/main/java/cx/ring/client/ConversationActivity.java

...p/src/main/java/cx/ring/client/DetailHistoryActivity.java

...ndroid/app/src/main/java/cx/ring/client/HomeActivity.java

.../main/java/cx/ring/fragments/AccountCreationFragment.java

...in/java/cx/ring/fragments/AccountsManagementFragment.java

.../main/java/cx/ring/fragments/AdvancedAccountFragment.java

.../main/java/cx/ring/fragments/AudioManagementFragment.java

...oid/app/src/main/java/cx/ring/fragments/CallFragment.java

...app/src/main/java/cx/ring/fragments/CallListFragment.java

.../main/java/cx/ring/fragments/CallableWrapperFragment.java

.../src/main/java/cx/ring/fragments/ContactListFragment.java

...n/java/cx/ring/fragments/DetailsHistoryEntryFragment.java