Save groups to db

I'm not saying this is the best way but it is pretty tricky and works well way!!

Also, hidden <li> have been added to prevent us from getting locked out if the <ul> is empty. 

I think we need a link to do something from here so i will put that on the list 

No tests are included. :(

https://trello.com/b/bzK9Pi4S/phase-3-project