Blacklist for purge tag headers

In my case I need exact matches. I want to blacklist node_list, but that would also match node_list:article, which is not what I want.

Attached you can find a re-roll.

This one only checks for exact matches. But I didn't fix anything else. So just ignore this patch in case you don't need that.

Oh, I just realized that using prefixes is the way the blacklist of purge_queuer_coretags works already. I don't think that that is optimal, since that gives us less flexibility, but I guess that's is another issue. Please ignore the patch in #13.

The last submitted patch, 12: purge-tagsheaders-blacklist-2977563-12.patch, failed testing. View results →
- codesniffer_fixes.patch Interdiff of automated coding standards fixes only.

Updated patch #12 with missing TagsHeadersConfigForm.php

The last submitted patch, 17: purge-tagsheaders-blacklist-2977563-16.patch, failed testing. View results →
- codesniffer_fixes.patch Interdiff of automated coding standards fixes only.

This is great! Some suggestions to make it more viable:

1. Add an "Invert" checkbox to deny/allow the listed cache tags dynamically
2. Add URL groups to deny/allow cache tags for specific pages
3. Use wildcard character instead of "contains" functionality for more granular control