With this change OpenProjectAction will trigger a background refresh for
the project, ensuring that the project resources are up-to-date if the
project changed in the file system while being closed. This can e.g.
occur due to an update in the projects repository.

Change-Id: I37826029cc23e075ca7e11cc33a0f762875eb720
Signed-off-by: Simeon Andreev <simeon.danailov.andreev@gmail.com>