Mime types

[rtibbles]

Description

Attempts to properly set mime types for GCS upload

Issue Addressed (if applicable)

Fixes #2553

[aronasorman]

I see epubs mentioned here!

[codecov]

Codecov Report

Merging #2771 (4ca5990) into develop (0fac4b1) will increase coverage by 0.02%.
The diff coverage is 100.00%.

@@             Coverage Diff             @@
##           develop    #2771      +/-   ##
===========================================
+ Coverage    84.92%   84.94%   +0.02%     
===========================================
  Files          309      309              
  Lines        15346    15367      +21     
===========================================
+ Hits         13033    13054      +21     
  Misses        2313     2313              

Impacted Files	Coverage Δ
...ation/contentcuration/tests/test_storage_common.py	100.00% <100.00%> (ø)
...ntcuration/contentcuration/utils/storage_common.py	92.30% <100.00%> (+0.41%)	⬆️
...ontentcuration/contentcuration/viewsets/channel.py	78.94% <0.00%> (+0.49%)	⬆️
contentcuration/contentcuration/viewsets/user.py	71.62% <0.00%> (+1.06%)	⬆️

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