Saying no items on the index page of asset if there are no items
separating -missing this field- into -missing value- and -dont have this field-
fix the failed tests due to changing index pages
fix other tests related to separating missing field and missing value
generate contributor value for a Person object
better inform message
fix to incorrect use of name, and added test, for get_all_institution_listing
Fix to reindexing, to handle nil items from the queue - SYSMO-1616

This can occur when an item is added or changed, and deleted before the item in the queue is acted upon.
update tags
Merge seek-0.21 from mercurial into seek-unstable

Conflicts:
	.hgtags
Merge branch 'seek-unstable' into vln-merge