Merge pull request #102 from Coornail/fix/539-install-profile-errors

Fix/539 install profile errors
Update resources submodule
Update walkhub submodule
ticket/540: change image on frontpage

change the background image of the featured block on the front page, and
remove the old image
Merge pull request #103 from csanyiarpad/master

ticket/540: change image on frontpage
Enable walkthrough_sharelink module on site install and update