I need to push more code :D Sorry about that. Will update the PR.

This PR now contains both enhancements and fixes:

• Implements the enhancement (JENKINS-66638). Webhook is now pushing Delete branch/tag events and handles them correctly when received in Jenkins.
• Also fixes the bug: When adding a new OrganizationFolder with GiteaNavigator, adding the WebhookRegistrationTrait failed with NPE when saving due to missing jelly stuff. Fixed and tested.
• Also fixes the bug: When using TagDiscoveryTrait, webhook will push Create events correctly and it is processed by the plugin. However, the new tag is not visible in Jenkins and a re-scan is needed. Fixed and tested.

The question is if it is OK to merge all these enhancement and fixes as part of JENKINS-66638 or if we should create two new Jira tickets in order to describe the bugs and refer to the issues here?

I am also not certain if the isMatch method in GiteaDeleteSCMEvent is needed or if it could just return false (from parent)?

It would be better to move bug fixes into separate PRs (no need to create Jira tickets)

@lafriks I have moved the bugfixes to two new PRs. This now (again) only covers JENKINS-66638. And again I am not sure what to do with the isMatch method ref my comments. I am tempted to remove it and let the parent return false for the scenario.

@lafriks Fixed the same refType stuff here is in #38. In addition I removed the isMatch method and things works still.

@lafriks Any clue on when 1.4.0 will be released?

@lafriks Any clue on when 1.4.0 will be released?

Probably when we manage to get CD workflow automatized we can release it