Changes in MBS restful API:
    - Refactor MBS API code
    - Unify module-/component_build API philosophy/design/approach
    - Naming fixes
    - _utc_datetime_to_iso moved from ModuleBuildAPI and is now a module-level function.
    - Existing v1 API remains unchanged. ComponentBuildAPI now supports individual component build listing + verbose mode.
    - documented in README
    - various component_build API tests added