encrypt to inactive and untrusted devices in jingle

encrypting to untrusted devices means no degradition of security
compared to not encrypting at all. Trust status display (shield) is made
independently at a later stage.

src/main/java/eu/siacs/conversations/crypto/axolotl/AxolotlService.java

@@ -1217,7 +1217,7 @@ public class AxolotlService implements OnAdvancedStreamFeaturesLoaded {
                 final XmppAxolotlMessage axolotlMessage = new XmppAxolotlMessage(account.getJid().asBareJid(), getOwnDeviceId());
                 final String content = child.getContent();
                 axolotlMessage.encrypt(content);
-                axolotlMessage.addDevice(session);
+                axolotlMessage.addDevice(session, true);
                 fingerprint.addChild(axolotlMessage.toElement());
                 transportInfo.addChild(fingerprint);
             } else {