conversation list: show all contacts

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

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

...droid/app/src/main/java/cx/ring/service/LocalService.java

ring-android/app/src/main/res/layout/frag_call_list.xml

...roid/app/src/main/res/layout/frag_contact_list_header.xml

ring-android/app/src/main/res/layout/frag_home.xml

ring-android/app/src/main/res/layout/header.xml

ring-android/app/src/main/res/layout/item_calllist.xml

ring-android/app/src/main/res/layout/item_contact.xml