Groups

achieved:
+ wrapper 
+ how to add people to a lunch and how to take them down !! ohlee two tables beside each other

questions:
- groups.html page:
How to display the users per group ? group.users does not work

- match method:
How to make it that method can only called displayed once per lunch

- sometimes running a :! command with nerdtree (e.g.rake spec) I get segmentation error bug and have to close nerdtree for all.