Add QtJson to 3rdparty, use it in ownCloudInfo
WIP: Move network tasks from ownCloudInfo into Job classes.
WIP: Dissolve owncloudinfo class
Basic port, misses wizard
Bring back proper ssl handling
Cleanups, ownership for ssl error handler
Make the setup wizard compile again

- introduces more jobs
- needs more cleaning up
More porting to Account class

- Finish port of owncloud setup wizard to Account
- Deprive MirallConfigFile of the customHandle
Credential Store is no longer static

It now belongs to HttpCredentials
Remove ownCloudInfo for good
Merge remote-tracking branch 'origin/master' into account_refactoring

Conflicts:
	src/mirall/accountsettings.cpp
- Make saving/restoring accounts work.
- Prepare for fetching quota
Merge remote-tracking branch 'origin/master' into account_refactoring

Conflicts:
	src/mirall/accountsettings.cpp
	src/mirall/folder.cpp
Build fix
Make quota display work
Make http credentials work
Ensure an SSL Error Handler is always available
Reformatting fixes
Add new quotainfo class
Fix approved SSL certificates being forgotten