fixes to medatada refresh

Individual image metadata refresh did not save the update.

Also updates getid3 to version 1.9.7
release id 0a7b0545bd
Merge remote-tracking branch 'origin/master' into 1.4.6

Conflicts:
	zp-core/Zenphoto.package

	modified:   zp-core/Zenphoto.package
	modified:   zp-core/admin-edit.php
	modified:   zp-core/githead
	modified:   zp-core/zp-extensions/class-video.php
	modified:   zp-core/zp-extensions/class-video/getid3/getid3.php
	modified:   zp-core/zp-extensions/class-video/getid3/module.audio-video.quicktime.php
	new file:   zp-core/zp-extensions/class-video/getid3/module.tag.apetag.php
	modified:   zp-core/zp-extensions/class-video/getid3/module.tag.id3v2.php