yaz/commit

first prototype for tag gardening from tag perspective

 applications/yaz_tag.pl           | 323 ++++++++++++++++++++++++++++++++++++++
 applications/yaz_tag_edit.pl      | 217 +++++++++++++++++++++++++
 lib/video_annotation.pl           |  16 ++
 lib/yaz_util.pl                   |   1 +
 web/css/tag_garden.css            |  71 +++++++++
 web/js/videoframes/videoframes.js |   7 ++
 6 files changed, 447 insertions(+), 188 deletions(-)