Custom validation

[davelopez]

In addition to syntax validation, the extension could:

• Check that all workflow outputs have labels. #41
• Check that content_id, tool_id and tool_version are in agreement. #42
• Check for the release entry to be defined. 6ce8db6

[davelopez]

These custom validations will be additional contributions to the schema validation added in #18.

The release entry has been already added as required property to the schema here. Workflows missing this release property will show an error level entry in the Problems panel:

If we want to show a warning level entry instead we will need to remove it from the required properties in the schema and add it to the custom validation contributions.

Update

We decided to keep the schema validation rules as the minimum requirements for all workflows and then define different Profiles containing additional custom sets of rules with different severity levels. And then, let the user choose which profile to use (see #27).

[davelopez]

Custom validation rules #35 and profiles #46 are now supported. The complete list of custom validation rules will be tracked in #45