Check for auth on importing linkedin data

[danlipert]

Description

This PR checks if the user is authenticated before accepting the updated data for their job opportunity profile.

Refers/Fixes

This issue was referred to us by a security researcher.

Testing

After this change I am still able to update my own profile. If I change to change the profile handle in the URL I now receive a bad request error

[codecov]

Codecov Report

Merging #4429 into master will decrease coverage by <.01%.
The diff coverage is 0%.

@@            Coverage Diff             @@
##           master    #4429      +/-   ##
==========================================
- Coverage   30.13%   30.12%   -0.01%     
==========================================
  Files         208      208              
  Lines       16787    16791       +4     
  Branches     2254     2256       +2     
==========================================
  Hits         5058     5058              
- Misses      11535    11539       +4     
  Partials      194      194

Impacted Files	Coverage Δ
app/dashboard/views.py	14.19% <0%> (-0.05%)	⬇️

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[codecov]

Codecov Report

Merging #4429 into master will increase coverage by <.01%.
The diff coverage is 33.33%.

@@            Coverage Diff             @@
##           master    #4429      +/-   ##
==========================================
+ Coverage   30.02%   30.02%   +<.01%     
==========================================
  Files         209      209              
  Lines       16881    16884       +3     
  Branches     2276     2277       +1     
==========================================
+ Hits         5069     5070       +1     
- Misses      11616    11618       +2     
  Partials      196      196

Impacted Files	Coverage Δ
app/dashboard/views.py	14.3% <33.33%> (+0.04%)	⬆️

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[thelostone-mc]

@danlipert we could make this bit cleaner by simply using @login_required decorator
would be cleaner. We've used in for other views!

[danlipert]

@thelostone-mc I've added the @login_required decorator - thanks for the suggestion!