Add a page loading indicator to the page number input
Add updated loading-small.png (and corresponding Retina) asset
Fixes printing regression a10fde1
Merge pull request #5368 from yurydelendik/fixprintcss

Fixes printing regression a10fde1
Merge pull request #4150 from Snuffleupagus/issue-3990

Add a page loading indicator to the page number input