adadds documentation for block grid variable
Anchored image breaks timer - bugfix 

If the slider image is wrapped in an anchor tag the timer never starts because line 278 was looking for a direct child image. changed to .find('img') to locate inner images
Merge pull request #5189 from codymorgan/patch-1

Orbit anchored image breaks timer - bugfix
Fix sidebar in docs
Merge branch 'refs/heads/master' into 5.3-wip