Test page & code for travel Cats pix backlog...

The 'greatest hits' from ~ May 2017-December 2019. Almost all 'on tour' (or at camp), but looks like a few 'at home' ones got in too. Code is too complex, but was looking for simple layour (that's almost impossible to find), grid-based, and easy to dump a long list of files into without much hassle. As is I had to bend a few things to make it less obnoxious (the 'wait...' picture for one, to replace a $#@! spinning circle!).