* Still need to fix references to git repos
* Still need to remove direct link to PDF schematic

Sorry to do this last second @lorforlinux, but I believe I'm making
things simpler. I hope I am!

Using this we can hide images or other content from PDF that we otherwise want to see at least on the Web version.

Update BeaglePlay docs

See merge request beagleplay/docs!4

Fixed minor mistakes in component location graphics.