Style difference between Proxy and Installed apps

[romer8]

Problem

In the apps page in the library, there is no immediate way to tell which app is a proxy app and which one is an installed app.

Current Solution

Currently, the only way to distinguish between them is to add a custom template for it.

Proposed

Solution 1:
Add a background image to the card indicating that is a proxy app or an installed app. The following image shows a little arrow that indicates proxy app

Solution 2 :
Add proxy apps and installed apps in different rows with a title indicating proxy/installed apps

[swainn]

This feature should be configurable and off by default.

[swainn]

Addressed by #989