render function added, modification time update moved to opentox-client
Merge branch 'development' of github.com:opentox/opentox-server into development

Conflicts:
	lib/4store.rb
list sorting removed. DC.modified inserted.
Merge branch 'development' of github.com:opentox/opentox-server into development
Merge branch 'development' of github.com:opentox/opentox-server into development

Conflicts:
	lib/4store.rb
uri list fixed
Merge branch 'development' of github.com:opentox/opentox-server into development

Conflicts:
	lib/4store.rb