Squashed 'core/' changes from 46177b7..8621851

8621851 Merge branch 'feature/issue297-oauth' into feature/issue297-wizard
d6fe1d9 Added workaround for 'connect' via GUI with syncany:// link, relates to #297
6c3a8ba A first shot at the WebSocketUserInteractionListener
b8aa466 Make CipherSpec default constructor (to allow serialization); relates to #297
0820c08 Added skeleton InitManagementRequest/Response, relates to #297

git-subtree-dir: core
git-subtree-split: 8621851d9a621b357570db2910a82a8d97a87a79
Merge commit '3d4a179dedb7ee25ec0ea469e7b53fd8e2bafeed' into feature/issue297-wizard