deselect all strains should also show specimens without strains for VLN(http://seek.virtual-liver.de:8080/browse/XDB-350)
add config variable for project hierarchy
delete parent project subscriptions if none of its children is subscribed( http://seek.virtual-liver.de:8080/browse/XDB-296)
improve project subscription display
add test for deleting parent project subscriptions if none of its children is subscribed and tests to remind of a rails bug
Project subscription can be deleted if the person of this project subscription subscribes none of descendants of the project
hierarchical subscriptions are added/removed when projects are assigned/unassigned to the person, while person subscribes/unsubscribes only the direct project when he/she edit his/her profile page. All subscriptions will be cleaned when no projects assigned (http://seek.virtual-liver.de:8080/browse/XDB-296)
update test for subscriptions with project hierarchies
show specimens with dummy strain only when no strains are selected( for VLN,http://seek.virtual-liver.de:8080/browse/XDB-350)
update tags
Merge ../ into vln-more-merge

Additional changes to the VLN mercurial repository since starting merge. These will be merged across into the main merge branch after tests have run and passed.

Conflicts:
	.hgtags
	app/models/person.rb
	app/models/project.rb
	config/initializers/seek_configuration.rb