Check empty passed array in versioncontrol_project_issue_get_issue_operation_ids() before passing it to a query.

- Typo on watchdog message.
- filterRelevantOperationLabelNames() method call does not need to be
  executed per project issue loaded.
- Only by pass current ref on getRelevantEventLabelNames() if not a
  branch, i.e. not all refs in the event.

i.e. do mark issue as non-valid on git_commits_as_comment event
processor, but not for git_issue_mapper.

Also add a general function to do the removal by label_id.

By pass more than one branch updated, since release packages autorebuild
is per project, not per branch.

Also use the right form element to include the submit callback.

- Skip node entity cache when calling drush vcpi-git-resync-maps.
- Insert values in chunks instead of in one block.