Automatic faculty selection

[Rica320]

Closes #797

This pull request makes the selection of faculties automatic.
For that, there was the need to fetch and parse a page (for example). However, if the user is only in one university, there will occur a redirect to the corresponding faculty page.

There are still some things to solve:

• the pct_id of the user needs to be found (probably an id in the database or something). This will probably require another fetch as this information is not present in the response body on login
• there is a lot of dead code to be removed
• getStudentFaculties can be refactored/removed>

Review checklist

• Terms and conditions reflect the current change
• Contains enough appropriate tests
• If aimed at production, writes a new summary in whatsnew/whatsnew-pt-PT
• Properly adds an entry in changelog.md with the change
• If PR includes UI updates/additions, its description has screenshots
• Behavior is as expected
• Clean, well-structured code

[codecov]

Codecov Report

Merging #815 (fb61515) into develop (0b5ff94) will decrease coverage by 0%.
Report is 2 commits behind head on develop.
The diff coverage is 0%.

Additional details and impacted files

@@          Coverage Diff           @@
##           develop   #815   +/-   ##
======================================
- Coverage       16%    16%   -0%     
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  Files          202    203    +1     
  Lines         6371   6389   +18     
======================================
  Hits           986    986           
- Misses        5385   5403   +18     

[Rica320]

still need to check if the pct_id is present in accounts of only one faculty

[bdmendes]

Let's close this since we're avoiding scrapping for now. (And let's wait for federated auth)