Add a views field handler that retrieves all operation label names

tagging until fixed.

Ok, I can confirm the bug, but it is not at the parsign level, so it should be a views integration problem, on the joins stuff.

Hey I think this is ready!

This also modify the commitlog_global_commits default view to use it instead of the current versioncontrol label name views fields, that naturally end up in one row per vc_op_id per label.

Doesn't seem to do the trick, at least not with my quick review on staging. Applied the patch, cleared caches and was still seeing one commit per branch.

Mmm.. I think the problem is that we need to change all views to use it. (maybe you are viewing one that I did not change, are you sure commitlog_global_commits is not working?)

I am now changing all the ones where there are repeated operations, but this is about vc_api, then we need to change vc_git ones and then vc_project ones :-/

Ok, here the patch changing all the other vc_api views that were not changed.

If this is ok, I will follow with vc_git ones.

vc_git related patch for this is on #1043506-1: Use versioncontrol_handler_field_operation_labels views field handler to avoid operation duplicates

Ok, after fixing a little notice I committed it!