feat(object): add a ClonableSharedPointer component to deal with shared PImpl (main usage: ClonableObject)

feat(core): use `other` instead of `src`/obj name on operators and copy constructors (uniform syntax)

-search friend with phone number

fix bad reading of quality_reporting_interval. No reason to have '!!', it is not a boolean but an interval in seconds.

Add tester for migration of messages database + load chat rooms from DB after migration + fix duplicated sip addresses in database during migration.

Fix crash during migration on Android by avoiding to throw exceptions. Apparently exceptions do not work reliabily on android, at least not with our current toolchain and compilation options.