Adding item creation in the client.
Adding basic test of item client item creation
More waiting on group creation to make things pass.
Revert "More waiting on group creation to make things pass."

This reverts commit f57fff659163aa43a892a109d734f5a2125ead89.
Closure for group and item views.
Merge pull request #287 from girder/item-create-and-test

Item create and test