libtoxav in tests and fix

.travis.yml

@@ -4,6 +4,7 @@ python:
 before_install:
   - sudo apt-get install -y checkinstall build-essential
   - sudo apt-get install portaudio19-dev
+  - sudo apt-get install libconfig-dev libvpx-dev libopus-dev check -qq
 install:
   - pip install PySide --no-index --find-links https://parkin.github.io/python-wheelhouse/;
   - python ~/virtualenv/python${TRAVIS_PYTHON_VERSION}/bin/pyside_postinstall.py -install

tests/tests.py

@@ -57,12 +57,12 @@ class TestFriend:
         ProfileHelper('', 'test')
 
     def create_friend(self, name, status_message, number, tox_id):
-        app = QtGui.QApplication(sys.argv)
         message_getter = None
         friend = Friend(message_getter, number, name, status_message, ContactItem(), tox_id)
         return friend
 
     def test_friend_creation(self):
+        app = QtGui.QApplication(sys.argv)
         self.create_singletons()
         name, status_message, number = 'Friend', 'I am friend!', 0
         tox_id = '76518406F6A9F2217E8DC487CC783C25CC16A15EB36FF32E335A235342C48A39218F515C39A6'