Set dummy conference info as a null core.
Load new items in case of chaning dates.
Allow gui to load until current date.
Fix video direction on screensharing.
Update SDK for tone indication on meetings.
Clean
- Fix binding loop on cacheBuffer and wrong variables on call statistics.
- Remove apostrophe from user-agent.
- Add RemoteCardDAV into contact list.
- Fix crash on starting a call while a conferenceInfo is loading.
- Contact details redirection after creating one.
