core, frontends: various fixes for Libervia:

- quick_app: don't fail when we can't get autodisconnect parameter
    - bridge: removed useless BridgeFrontend parent class
    - use of TypeError, unicode and list to workaround Pyjamas incompatibilities

frontends/src/quick_frontend/quick_app.py

@@ -76,10 +76,15 @@ class ProfileManager(object):
         self.whoami = jid.JID(jid_s)  # resource might change after the connection
         self.bridge.isConnected(self.profile, callback=self._plug_profile_isconnected)
 
+    def _autodisconnectEb(self, failure_):
+        # XXX: we ignore error on this parameter, as Libervia can't access it
+        log.warning(_("Error while trying to get autodisconnect param, ignoring: {}").format(failure_))
+        self._plug_profile_autodisconnect("false")
+
     def _plug_profile_isconnected(self, connected):
         self.connected = connected
         self.bridge.asyncGetParamA("autodisconnect", "Connection", profile_key=self.profile,
-                                   callback=self._plug_profile_autodisconnect, errback=self._getParamError)
+                                   callback=self._plug_profile_autodisconnect, errback=self._autodisconnectEb)
 
     def _plug_profile_autodisconnect(self, autodisconnect):
         if C.bool(autodisconnect):