Comment 6 for bug 1772955

There is a branch available here: https://git.evergreen-ils.org/?p=working/Evergreen.git;a=shortlog;h=refs/heads/user/miker/lp-1772955-only-show-totals-when-xact-has-balance

From the commit message:

This commit adds a new view and IDL definition that shows the total owed/paid/balance for transactions that have a balance other than 0. This new view is used in the patron summary bar, and access is provided wherever the all-open-transactions version is available in case we want to move to the new one elsewhere.