There was a bug on status-react where it would save filters that were
not listened to.
This commit adds a task to clean up those filters as they might result
in long syncing times.
This commit also returns topics/ranges/mailserves from messenger in
order to make the initialization of the app simpler and start moving
logic to status-go.
It also removes whisper from vendor.
In some instances the communities migration would be skipped but not
marked as `dirty`.
This commit addresses the issue by:
- Making sure that if dirty is set the migration is not skipped but
replayed
- If the version is on the communities migration and dirty is false, we
check for the presence of the communities table. If not present we
replay the communities migration.
- Make community_id field in user_messages nullable
It also removes all the `down` migration, as we can't use them
effectively, as explained in the README.md added.