synchronise external resources for Google Drive
Create/update ExternalResource resources in the application for each
Google Drive folder. Note that this requires that the service account in
the SMI have the smi.add_externalresource
and
smi.change_externalresource
permissions.
A small HACK is present to get the appropriate API endpoint for the external resources. This can be removed once smi#366 is addressed.
Closes #3 (closed)