Stop unnecessary loading of all Surveys once forms are loaded

[muloem]

After all forms are loaded, an observer then proceeds to request all the related Surveys for these forms one-by-one even though the surveys have already been loaded through a bulk request. This increases the overall loading time of the dashboard and is unnecessary because the purpose of the loading is to fill a property surveyGroupName that is only used under the assignments tab.

Proposal is to stop this loading of all Surveys and to use a computer property for the surveyGroupName.

[muloem]

Test Plan

The changes affect the survey assignment and the offline assignment UI. These should behave the same as before, i.e. the survey should correctly show next to the form name.