Neutral Zone Tab update

Cancel button added - can cancel an attempt this way.
Disabled the other teams "Attempt" button, so that you can not click
this until you cancel the current attempt (or resolve the current
attempt as a success or failure).
Shifts Tab Updated

Changed the way the shifts will be used - buttons instead of textfields.
Still need to add "All" functionality for a full shift change.
Shifts update

Working on make the "All" buttons for the shifts function correctly.