Finished friend-adding functions && added account_change handler.
Added temporary handler for "getUserDataFromId2".
Added the conferenceManager class for server
Merge branch 'develop' of https://github.com/matteozajac/Jamii into mergeMZ
Implemented logical conferences and broadcasting only to conference members.
Add hash support in usersDatabase

* change password format in usersDatabase - encoded sha256
* fix in usersDatabase - bad sessionID doesn't imply server crash
Logout added to connection manager.
Merge branch 'develop' of https://github.com/Regalis/Jamii into sessionFix
Sessions fixed. Hopefully...
Fixed fixng session.
Fix password change
Before regalis
Merge https://github.com/Regalis/Jamii into develop
submit and reset