server, browser: partial Libervia fix Libervia was broken following the refactorings. This commit partially fixes it : Libervia is starting, avatar, blog and message are working again, but not everything is restablished yet. following things have been fixed/changed: - new dependency: shortuuid - D-Bus bridge is working again - fixed naming in several bridge methods - register method changed to register_signal - fixed Chat widget, which was not working anymore since the refactoring - avatar now use avatarGet. Cache dir is accessible using a session specific uuid, to avoid cache leak (i.e. accessing cache of other profiles) - server: new uuid attribute in session data Browser code is not fully working yet, notably OTR and contact list are not fully fixed.

The work in this directory is licensed under the Creative Commons BY 3.0 License and comes from http://www.flaticon.com.
List of files and their autorships:
    - clock104.png from Icon Works <http://icon-works.com>
    - comment33.png from Dave Gandy <http://fontawesome.io>
    - tag67.png from Katarina Stefanikova <http://cmdspace.com/kstefanikova>