Prevent incompatible apps from being installed

I'm just the proxy for this issue; for details, please refer to fdroiddata#1324 (closed)

When a device doesn't meet the requirements of an app (listed in the app's Manifest, e.g. android:requiresSmallestWidthDp="600"), the client should not offer them for install. Just frustrates the user, even if the app handles the conflict giving a "Sorry" message – even worse if it crashes, as in the referenced issue. Usually the developer has a good reason for the set restriction.