This gets the necessary data to the issuelist for it to support a clickable commit status icon which pops up the full list of commit statuses related to the commit. It accomplishes this without any additional queries or fetching as the existing codepath was already doing the necessary work but only returning the "last" status. All methods were wrapped to call the least-filtered version of each function in order to maximize code reuse.

And use a better method to build the dictionary on the fly instead of in the controller code.

I would have preferred to leave this function in for future use, but `make lint` wants it gone, so it's gone.