Disable usage of spreadsheet row filling

[rtibbles]

Description

Removes feedback form entirely and links to the forum.
Comments out submission to google sheet for storage request to let them go through to email

Issue Addressed (if applicable)

Fixes #2959
Fixes #2561

Before/After Screenshots (if applicable)

Before:

After:

Steps to Test

• Make sure 'Give Feedback' in the drawer now links out to the Studio page of the community forums
• Submitting a storage request should now not return a 500

[rtibbles]

Traceback now when submitting the storage request form, as opposed to a 500:

JSON message is:
{"From": "Kolibri Studio <noreply@learningequality.org>", "To": "content@learningequality.org,a@a.com", "Subject": "Kolibri Studio storage request", "TextBody": "\n\n\n\n\nHello Admin,\n\nThank you for your request for additional storage.\n\nHere is a copy of your request:\n==============================================================================\n\nStorage needed: 10000GB\n\nNature of content\n    Number of resources: 10000\n    Average resource size: 10MB\n    Type of resource uploaded: Corgis\n    Author/curator/aggregator: Me\n    Sample content: asdasd\n\nLicensing and access\n    Licenses: CC BY\n    Potential public channels: \n        Custom Nav Channel (4abaf7b4f0e8533fae112e650ff282ee)\n\nContent usage\n    Intended audience: asdasd\n    Target region(s): Andorra\n    Number of imports per month: 10000000000\n\nOrganization\n    Organizational affiliation: Not affiliated\n    Organization type: Not applicable\n\nUse case\nTime constraint: 1 week\n\nasdasdasd\n\n==============================================================================\n\nWe are currently reviewing the information that you have provided, and will work to be in touch in a timely manner depending on the scope of your request. While Kolibri Studio is under active development, we need to be especially mindful of how much additional storage can be provided to ensure that we can successfully continue to build the Studio tool. Many thanks in advance for your understanding.\n\n\nThanks for using Kolibri Studio!\n\nThe Learning Equality Team\n\n\n"}
"POST /settings/request_storage HTTP/1.1" 200 0
INFO:django.server:"POST /settings/request_storage HTTP/1.1" 200 0

[codecov]

Codecov Report

Merging #2974 (e6ad8ef) into hotfixes (28587f8) will increase coverage by 4.94%.
The diff coverage is 92.92%.

@@             Coverage Diff              @@
##           hotfixes    #2974      +/-   ##
============================================
+ Coverage     80.80%   85.74%   +4.94%     
============================================
  Files           281      298      +17     
  Lines         12659    15843    +3184     
============================================
+ Hits          10229    13585    +3356     
+ Misses         2430     2258     -172     

Impacted Files	Coverage Δ
contentcuration/contentcuration/decorators.py	56.60% <50.00%> (-37.60%)	⬇️
...ntentcuration/contentcuration/db/models/manager.py	91.20% <90.98%> (-8.80%)	⬇️
contentcuration/contentcuration/forms.py	82.35% <94.04%> (+33.89%)	⬆️
contentcuration/contentcuration/api.py	92.06% <100.00%> (+1.43%)	⬆️
...tentcuration/contentcuration/context_processors.py	100.00% <100.00%> (ø)
...ontentcuration/contentcuration/db/advisory_lock.py	100.00% <100.00%> (ø)
...tcuration/contentcuration/db/models/expressions.py	93.33% <100.00%> (-6.67%)	⬇️
...entcuration/contentcuration/db/models/functions.py	100.00% <100.00%> (ø)
...ation/contentcuration/tests/test_rest_framework.py	36.93% <0.00%> (-63.07%)	⬇️
contentcuration/contentcuration/utils/format.py	21.05% <0.00%> (-49.54%)	⬇️
... and 181 more

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[micahscopes]

Tested and working