Repo cleanup

[rly]

• Replace refs to old CI with new CI
• Fix GitHub community profile does not show code of conduct and issue template #777
• Fix typos, formatting
• Remove dummy job from Azure
• Remove dead code in docs/code/creating-and-writing-nwbfile.py

[codecov]

Codecov Report

Merging #1055 into dev will increase coverage by 0.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##              dev    #1055      +/-   ##
==========================================
+ Coverage   71.16%   71.17%   +0.01%     
==========================================
  Files          37       37              
  Lines        2792     2793       +1     
  Branches      554      554              
==========================================
+ Hits         1987     1988       +1     
  Misses        679      679              
  Partials      126      126

Impacted Files	Coverage Δ
src/pynwb/image.py	90.9% <0%> (+0.13%)	⬆️

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