feat(resource): delete and erase resource (DSP-1228)

[kilchenmann]

resolves DSP-1228

What I did:

• new section in dialog component for delete (with comment) and for erase (without comment)
• integration of delete and erase methods from js-lib
• after deleting it displays (deleted) behind the label
• app-specific message banner to display info, that the resource has been deleted
• if resource doesn't exist (anymore) the api returns a 404 error. In this case display text, that the resource does not exist or could not be found.
• check if user is system or project admin; this information is needed to enable or disable the erase button.
• not sure how to handle permissions: the edit menu is activated in case a user is logged-in

[mdelez]

If I edit the value of a resource property, I can no longer delete or erase the resource. Seems to be an issue with the API:

[kilchenmann]

If I edit the value of a resource property, I can no longer delete or erase the resource. Seems to be an issue with the API:

Thank you for this report. Yes, in this case we should take the last modification date into account (somehow).

[kilchenmann]

@mdelez I fixed the issue you mentioned (#489 (review)) in commit ad54fa8. But it's not the best solution yet. I think we should emit the last modification date from ui-lib's property-value component. I wrote already a corresponding issue on youtrack: DSP-1813 --> not necessary anymore. DSP-UI returns already kind of lastModificationDate. Resolved in 6415484

[kilchenmann]

@mdelez This PR should be ready for review again

[mdelez]

Nice :)