Administrators can upload logos to display branded messages

[alysivji]

Closes #295

What does this do

• 317 -- Users can upload logos to blob store

• 319 -- Improve user experience for uploading logos

• update helm to add environment variables to containers from Kubernetes secrets

Why are we doing this

Improve user experience

How should this be tested

Test in staging

Migrations

n/a

Dependencies

• [x] create secrets for staging and production
• [x] test in staging before releasing
  • don't have a great way to test in staging, accidently tested in production and had to make a change to the environment variable; otherwise we are good

Callouts

n/a

[codecov-commenter]

Codecov Report

Merging #318 into master will increase coverage by 0.12%. The diff coverage is 92.63%.

@@            Coverage Diff             @@
##           master     #318      +/-   ##
==========================================
+ Coverage   92.35%   92.48%   +0.12%     
==========================================
  Files          70       71       +1     
  Lines        2315     2394      +79     
==========================================
+ Hits         2138     2214      +76     
- Misses        177      180       +3     

Impacted Files	Coverage Δ
busy_beaver/common/wrappers/aws_s3.py	89.18% <89.18%> (ø)
busy_beaver/apps/web/views.py	77.77% <93.02%> (+4.01%)	:arrow_up:
busy_beaver/apps/web/forms.py	100.00% <100.00%> (ø)
busy_beaver/clients.py	100.00% <100.00%> (ø)
busy_beaver/common/wrappers/__init__.py	100.00% <100.00%> (ø)
busy_beaver/config.py	100.00% <100.00%> (ø)

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