Correct back behavior from app details

Opening an app details from a category/search, push back arrow on titlebar sends you to Latest instead of the place you were (pressing Android back arrow works ok though)

assigned to @pserwylo

I'm working on this in a WIP branch of mine, so assigning to me.

mentioned in merge request !444 (merged)

closed via commit 343e91280a373ef6f7a1f4e5aa21ced758265787