intra-cluster server messages have to be passed

Merge pull request tinode#713 from tinode/devel-18

Possible fix for a crash

another case of unfinished transaction

Merge pull request tinode#710 from tinode/next

Fixing {get sub ims=...} for subscriptions with new messages

crash in store due to a bug in mysql adapter on missing auth record

crash in store due to a bug in mysql adapter on missing auth record

a couple of bug fixes in mongo db

ios ru translation

a bit more work on Helping out section

change /status path to /debug/status