Tags by name (includes a G2 mapping)
Merge branch 'tag_name'

Conflicts:
	modules/g2_import/controllers/g2.php
	modules/tag/controllers/tag_name.php
Merge pull request #86 from mikeage/tag_name

Tags by name (includes a G2 mapping)

Fixes #1940.
Merge branch 'master' of git://github.com/gallery/gallery3