Upgrade /programs, add desksaver

[cwervo]

The goal of this PR is two fold:

• Upgrade the folkName.local/programs output to be more readable
• Add a virtual-programs/desksaver.folk that displays RAM usage, basic metrics, and maybe a little animation to tell that the system is not completely frozen when there are no programs out on the table

This will address #130.

[osnr]

We can probably factor this out of web.tcl and into a separate program (web/programs.folk) while we're at it right?

[cwervo]

Hmmm, I'm missing something @osnr ... when I use subst here instead of html the page doesn't render at all, html doesn't fill in the $.*Usage variables though.

[cwervo]

Re: splitting out web, I started that and want to finish that in a coming PR on this branch ac/docsv1 branch. This branch adds a desksaver watcher and is ready for review. Will merge Monday unless there are any requested changes. Remembered a few places where this is still unfinished, will finish this up next week.

[osnr]

How is this looking right now? I'm a little skeptical of the value of this change now (is it clunky?), especially on the handheld system, given that we already have RAM checking and marching ants.

[cwervo]

Yeah, the RAM checking and marching ants on gadgets do make this a bit redundant. I'll close this PR and siphon out just the program page upgrades into a smaller PR and can merge that since it's a pure win.

[cwervo]

Closing, will siphon statement page upgrades into a smaller PR.