Refactor duplicate code for Work Report and Home Detail view

[brylie]

The Work Report and Home Detail view contain a significant amount of duplicated code. However, the code contains subtle changes, due to filtering the work reports on the Home Detail view.

Task

• determine how to share code/queries between the Work Report and Home Detail view
• create a new app called metrics
• move the shared code to the new app
• make changes to the code so it can be shared across the two views