Move additional filter tutorials to subsection and fix binder post build script

[sdhiscocks]

binder build script was missing plotly dependency

[codecov]

Codecov Report

Merging #704 (dd80c45) into main (0418c1b) will not change coverage.
The diff coverage is n/a.

❗ Current head dd80c45 differs from pull request most recent head aaab1ee. Consider uploading reports for the commit aaab1ee to get more accurate results

@@           Coverage Diff           @@
##             main     #704   +/-   ##
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  Coverage   94.58%   94.58%           
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  Files         171      171           
  Lines        8794     8794           
  Branches     1707     1707           
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  Hits         8318     8318           
  Misses        344      344           
  Partials      132      132           

Flag	Coverage Δ
integration	70.35% <ø> (+0.02%)	⬆️
unittests	90.73% <ø> (ø)

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[nperree-dstl]

Looks good! While we're at it can we add sphinx_gallery_thumbnail_number = 3 to the Information Filter tutorial so it's the same as the others?