My bar bug squishes

Our error tracker noticed a couple of small bugs in the new my bar functionality. This was a bit of an edge case where trying to add ingredients in a certain way would funk the system out. We squashed that.

We've also implemented a few extra catches for null's around the place, a few little gotcha's.

Nothing massive here, but we've also been squirrelling away on the new app and the api to deal with that.