Add the possibility to remove deprecation flag from a resource

[umbreak]

From nexus-kg created by umbreak : BlueBrain/nexus-kg#519

Right now, once a resource is deprecated is not possible to un-deprecate it.

This feature has been requested several times (even though not formally, because I cannot find any issue where to link it).

• Is it for all resources incl. projects etc.? Yes, can be applied to all resources, even Delta-specific resources.
• Do we need a special ACL for this? If you can deprecate, you can un-deprecate. No additional ACLs.

[adulbrich]

@MFSY @annakristinkaufmann do you have any thoughts on the matter?

[MFSY]

Hi @adulbrich ,

I agree with @umbreak proposal. Nice feature to have.

[annakristinkaufmann]

Hi @adulbrich ! I agree with @MFSY.

[imsdu]

Fixed in #4401