Merge pull request #72 from mastercoin-MSC/database-staging

Sync to Master
Merge pull request #73 from mastercoin-MSC/database-staging

Sync to Master
return list of usable currencies
Merge branch 'dbstaging' of https://github.com/achamely/omniwallet into dbstaging
Merge pull request #76 from mastercoin-MSC/database-staging

Sync to Master
updated api calls
Merge pull request #1003 from achamely/dbstaging

Clean up and updated api calls