Merge pull request #524 from e-cuellar/5.2

Fixed. Sucessfuly importing always reports an error by default.
[BACKLOG-10] - Updating some path errors in the documentation
Merge pull request #526 from brendan-lynch/5.2

[BACKLOG-10] - Updating some path errors in the documentation
[BACKLOG-10] - Added messages to the request and response blocks that are intentionally left blank to add clarity to the OEM Documentation.
Merge pull request #529 from brendan-lynch/5.2

[BACKLOG-10] - Added messages to the request and response blocks that ar...
[BACKLOG-290] REST: Metadata import refactoring as requested by Nick