Added operating system to url recognition and data returning: name and manufacturer
Fixed the OS model to make the name a primary key

Updated devdoc to show these changes
	modified:   PCnstein/urls.py
	modified:   PCnsteinapp/datautils.py
	modified:   PCnsteinapp/models.py
	modified:   PCnsteinapp/views.py
	modified:   apidevdoc.txt
Documented the code added with the previous commit