Prefix our _create_network function with wsuwp
s/site_name/network_name/ when adding a new network
If a primary site name is not provided, inherit the network name
Allow for the entry of a primary site title when adding a network

This avoids having the same title for the network and the primary site for that network each time. This will lead to less confusion when a network is created with the intention of putting content in the root domain.
Use 'My Networks' rather than 'My WSU Networks'
Introduce WSUWP Networks List Table

A very basic first implementation of WP List Table to show an All Networks page.