Author: Marina Glancy
MDL-16855 tags: allow to filter tags on management page
http://git.moodle.org/gw?p=moodle.git;a=commit;h=1e34257ec24785b79c175f0084470327b6629c7f
http://github.com/moodle/moodle/commit/1e34257ec24785b79c175f0084470327b6629c7f
+ 3.1 en [inputstandardtags,core_tag]
+ 3.1 en [resetfilter,core_tag]