Bug 992745: Show some demos on RTL homepages

This is not a permanent solution to the issue described in the bug, but
it does show some demos on the homepage. Next steps are to tinker with
Owl to make it truly support RTL languages, pager and all.
Merge pull request #2285 from openjck/temp-rtl-demos

Bug 992745: Show some demos on RTL homepages