Update Storm command reference

[therealsilence]

• Update Storm command reference to include new (currently undocumented) commands.
• Add definition of "Node Data" to Glossary.
• Minor updates to Glossary.

[codecov]

Codecov Report

Merging #2633 (6dbb919) into master (7b6f607) will decrease coverage by 0.12%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #2633      +/-   ##
==========================================
- Coverage   96.99%   96.86%   -0.13%     
==========================================
  Files         200      200              
  Lines       38450    38450              
==========================================
- Hits        37293    37245      -48     
- Misses       1157     1205      +48     

Flag	Coverage Δ
linux	96.86% <ø> (-0.01%)	⬇️
linux_replay	?

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
synapse/tests/utils.py	94.21% <0.00%> (-1.98%)	⬇️
synapse/lib/hiveauth.py	96.30% <0.00%> (-0.71%)	⬇️
synapse/cortex.py	96.53% <0.00%> (-0.62%)	⬇️
synapse/lib/view.py	95.81% <0.00%> (-0.51%)	⬇️
synapse/lib/trigger.py	94.98% <0.00%> (-0.39%)	⬇️
synapse/lib/jsonstor.py	98.29% <0.00%> (-0.25%)	⬇️
synapse/lib/lmdbslab.py	99.52% <0.00%> (-0.20%)	⬇️
synapse/lib/layer.py	96.98% <0.00%> (-0.13%)	⬇️

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