Go back to previous aspect

[Matthias Schoettle]

When instantiating an aspect, a user might look at that aspect (double tap on the aspect name). In that case it would be nice to have a back button (instead of Home) to go back to the previous aspect instead of having to navigate through the main menu first.

[Matthias Schoettle]

Resolved through addition of concern support (see commit 5a0b3fd and previous).