Make the text next to the back chevron clickable
Close #70
Close #901
Don't display empty block unless the block is actually empty.
Fix layout editing
Fixing a panel issue
Merge branch 'master' of github.com:concrete5/concrete5-5.7.0
don't attempt to get the contents of a css file if the path is null.
fix style issue
Fix #929
Merge branch 'master' of github.com:concrete5/concrete5-5.7.0
Fix #918
Fix #904
Cleanup