Group Name and SaveModel Method

Refactored the group tag out into a single method
Added a server-side call + client side signal
closes #20

added the events for save and modify in the client script
Merge pull request #28 from MisterJames/issue-20

Closes #20
Added HtmlHelper to add script to an MVC page for a model
Avoiding creating a global variable in HtmlHelper generated script
Changed Model IDs to Strings on the Hub

Closes #29. This was an easy change, nothing affected as the client is
not strongly typed.
Merge pull request #30 from MisterJames/StringKeys

String keys