Merge pull request #277 from ssamartyn/develop

Fix for ZEN-13546
ZEN-15630: wiki update
Merge pull request #278 from ssirushchyshyn/develop

ZEN-15630
Misc doc changes
Fixes ZEN-13580
no need for try
make sure db_name gets set
Merge pull request #279 from zenoss/feature/ZEN-13580

Fixes ZEN-13580
Fix for ZEN-15433