Migrate *all* photos to the cavelab setup. Header/footer still broken.

Completely remove the other image gallery themes.

I now have: image galleries, with lightboxes, and captions, with links
in them (and to Hugo pages), with full images lazy-loaded, with all
thumbnails auto-generated, and the ability to do this on both
individual images *and* with globbing, from page resources, from this
page or any specified one.  See cavelab_notes.txt.

It also has the ability to use Exif data of the photo - if I
preprocess it into a JSON file.

Known issues:
- The theme header/footer are now being overridden.  I am working to
  fix this first.
- I am missing some kind of fonts/images needed for the lightbox to
  show up properly.

content/posts/2016-09-25-pi-pan-tilt-1/index.md

@@ -10,8 +10,6 @@ aliases:
 - posts/2016-09-25-pi-pan-tilt-1.html
 ---
 
-{{< load-photoswipe >}}
-
 Earlier this year I was turning around ideas in my head - perhaps
 inspired by Dr. Essa's excellent class,
 [CS6475: Computational Photography][cs6475] - about the possibility of
@@ -46,7 +44,7 @@ I eventually had something mostly out of laser-cut plywood, hardware
 store parts, and [cheap steppers][steppers]. It looks something like
 this, mounted on a small tripod:
 
-{{< figure page="images" resource="2016-09-25-pi-pan-tilt-1/IMG_20160912_144539.jpg" >}}
+{{< figure page="images" resources="2016-09-25-pi-pan-tilt-1/IMG_20160912_144539.jpg" >}}
 
 I am able to move the steppers thanks to [Matt's code][raspi-spy] and
 capture images with [raspistill][].  The arrangement here provides two
@@ -68,7 +66,7 @@ picked up a [25mm M12 lens][25mm-lens] - still an angle of view of
 about 10 degrees on this sensor - and set it up in the park for a test
 run:
 
-{{< figure page="images" resource="2016-09-25-pi-pan-tilt-1/IMG_20160918_160857.jpg" caption="My shot's not slanted, the ground is">}}
+{{< figure page="images" resources="2016-09-25-pi-pan-tilt-1/IMG_20160918_160857.jpg" caption="My shot's not slanted, the ground is">}}
 
 (*Later note*: I didn't actually use the 25mm lens on that shot.  I
 used a 4mm (or something) lens that looks pretty much the same, and
@@ -103,7 +101,7 @@ sign.
 The first results look decent, but fuzzy, as $10 optics are prone to
 produce:
 
-{{< figure page="images" resource="2016-09-25-pi-pan-tilt-1/zwIJpFn.jpg" >}}
+{{< figure page="images" resources="2016-09-25-pi-pan-tilt-1/zwIJpFn.jpg" >}}
 
 Follow along to [part 2](./2016-10-04-pi-pan-tilt-2.html).