views for metadata fields
fixing missing tabbar-error
let DOs generate child-iris with ? instead of #.

In HTTP/URL syntax the "#" represents a fragment which
isn't even send to the server. This usually means that
it is not appropriate to use "#" for single individuals.
Instead we will use the Query-Separator "?".
adjust test(s) to use new ?-query syntax.
use do-child, when provided, for custom routing.
remove unnessecerily routes
Building further domain field properties
category tree based search for ontologies
adding new routes for categories
made method for get related ontologies for categories
Tests for getting Ontologies which are related to a category
Merge branch 'staging' into augmenting189_search_ontologies_by_category

Conflicts:
	app/helpers/navigation_helper.rb
	app/models/category.rb
	app/views/shared/_navbar.html.haml
rename the method for related ontologies in the rails-way
refactor related_ontology method
Merge branch 'augmenting189_search_ontologies_by_category' of github:ontohub/ontohub into augmenting189_search_ontologies_by_category
Fixed ontology unit test.
Merge branch 'augmenting189_search_ontologies_by_category' of github.com:ontohub/ontohub into augmenting189_search_ontologies_by_category
seedfile for projects for has_and_belongs_to_many

Conflicts:
	db/seeds/008-projects.rb
Merge branch 'augmenting189_search_ontologies_by_category' of github:ontohub/ontohub into augmenting189_search_ontologies_by_category
fixing view of licensmodels

Conflicts:
	app/views/license_models/index.html.haml