conflicts and circular imports

helper.py; added from_string constructor to CapabilityStepType

# Conflicts:
#	shared/workspaces/src/workspaces/schema.py
#	shared/workspaces/src/workspaces/services.py

CapabilityService, CapabilityInfo, CapabilityQueue, and
CapabilityEngine; updated some schema and interfaces

CapabilityExecutions

DB setup)

capability info

capability launcher; finished implementation of prototype capability
schema; began implementing capability services

the architecture we want; updated Capability and CapabilityRequest in schema.py

product_interfaces.py, and workflow_interfaces.py

* commit '2c2248fe':
  SSA-6324: fixed import
  SSA-6324: proof of concept -- running tests in Docker container. These tests all pass at the pytest command line -AND- inside a  container. scode project updater code removed -- doesn't work, and will be merged in from archive eventually.

comments and reorganized the order of the classes

SSA-6324: proof of concept -- running tests in Docker container. These tests all pass at the pytest command line -AND- inside a  container. scode project updater code removed -- doesn't work, and will be merged in from archive eventually.

architecture documentation

implemented service classes; also updated some interfaces

present in the archive eventually

changes