(cherry picked from commit d73e31d6)

(cherry picked from commit 12112c52)

Fixed adding a phone number with an invalid label to a Friend (will be added without label instead of not being added)

Cancel pending ICE task if it has not been executed before the deletion of the stream

By default on OGL : do not create a window. It must be explicitly specify to avoid missleading errors.

- local device could be marked as untrusted where it is 'me'.

Add test: check 'me' security level status for the fix.
Add function for tests to delete all chat rooms in one shot (without having to store chat rooms).
Fix test: configure core for conference on all account of the manager.
Add tester rc to get both marie and pauline on the same device.

fix java crash of accessed deleted weakglobal by using IsSameObject to detect whether a weak global reference points to a freed object

Fixed auth_info userid issue when restarting Core in tester + prevent crash in RemoteProvisioning test in case friend list can't be fetched

- Do not filter contacts if display names are different.

- Search provider return SearchResults instead of Addresses
- LDAP fill phone number of SearchResult if the field to build an adress is a phone number.

Fix an issue where STUN gathering requests could be sent over IPv6 instead of IPv4 for which they are more useful.