create single endpoint, based on client, to fetch tank-monitoring

[danvanhorn]

When navigating the the homepage of the app, we are taking a lot of time and firing off a lot of requests to the api to get tank monitoring. I know that we have something for this in the db already (un-utilized as of now) but I think that we should be able to grab and shape tank monitoring info from a single request once we add client ids to the app. This will greatly increase the loading time of the homepage