Admin page fixes

[jayoshih]

Description

Fixes syncing changes on the admin page

Issue Addressed (if applicable)

Fixes#2015

Checklist

• Is the code clean and well-commented?
• Has the docs label been added if this introduces a change that needs to be updated in the user docs?
• Has the CHANGELOG label been added to this pull request? Items with this label will be added to the CHANGELOG at a later time
• Are there tests for this change?

[codecov]

Codecov Report

Merging #2765 (56c03ff) into develop (b56f349) will increase coverage by 0.02%.
The diff coverage is 53.03%.

@@ Coverage Diff @@## develop #2765 +/- ##
===========================================
+ Coverage 84.92% 84.94% +0.02% 
===========================================
Files 307 309 +2 Lines 15327 15355 +28 ===========================================
+ Hits 13016 13044 +28 
Misses 2311 2311 

Impacted Files	Coverage Δ
...ntcuration/contentcuration/viewsets/contentnode.py	83.73% <0.00%> (ø)
contentcuration/contentcuration/tasks.py	62.58% <24.13%> (ø)
contentcuration/contentcuration/views/admin.py	73.68% <60.00%> (ø)
contentcuration/contentcuration/viewsets/user.py	71.62% <73.33%> (+1.06%)	⬆️
contentcuration/contentcuration/decorators.py	56.60% <100.00%> (ø)
...ontentcuration/contentcuration/viewsets/channel.py	78.94% <100.00%> (+0.49%)	⬆️
contentcuration/contentcuration/viewsets/file.py	72.22% <100.00%> (ø)
...tentcuration/migrations/0129_auto_20210113_1723.py	100.00% <0.00%> (ø)
...entcuration/migrations/0130_merge_20210113_1839.py	100.00% <0.00%> (ø)
... and 4 more

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[micahscopes]

Looks good!