The load time of /p/admin/applications page is significantly high if we have high number of products and application plans.

We are fetching all products and application plans, this takes a lot of time if we have multiple instances of such entities.

We should improve the logic to minimalize the load time, since products and application plans are not that important on the applications page.

Dev notes:
The main problem is with this slim file.
app/views/shared/applications/_listing.html.slim
We are calling accessible_services and `application_plans`.