Added tenant-id filter to db queries of secrets;
Merge remote-tracking branch 'upstream/master'
Added missing tenant-filtering logic/SQL; Added improved error reporting to clients;
Merge pull request #78 from dmend/master

Removed EncryptedDatum from plugin.
Added better error feedback to clients; Added missing unit tests;
Merged in Douglas' changes;
Bug fix for order/tenant creation;
Addressed Douglas issues with imports; Fixed PEP8 violations
Restore docstring param accidently removed;
Merge pull request #79 from jfwood/master

Added tenant filter to SQL calls; Integrated with latest crypto logic;
Release for v0.1.48
Prepare for next release