process to hold application when application is voted 'no'

[hugosolar]

Fixes

Fixes #396 by @Juliabrungs

Description

This PR adds a process to hold the application when the applicant receives a 'No' vote, so when that happens:

• The application switches its state to to-be-reviewed in order to wait until MC review and no one else is able to vote
• it gets a purple mark on the application approval list
• I reuse the MC review form in order to be used with this process as well
• When MC review the application
  • If MC approves (Yes): the application changes its state to vouching and the 'No' vote is removed so the application can be voted again
  • If MC reject the application: the application declines and the applicant is notified

Also, there's a couple of tiny fixes

• Fixed the availability of the vote form based on the amount of votes so far: if the appplicant has more than 5 votes, the form would not show up
• Style on vouch boxes on the applicant profile (backend)
• If sentences conflict between the "MC review" form and "voting on application" form

Checklist

• My pull request has a descriptive title (not a vague title like Update index.md).
• My pull request targets the default branch of the repository (main or master).
• My commit messages follow best practices.
• My code follows the established code style of the repository.
• I added tests for the changes I made (if applicable).
• I added or updated documentation (if applicable).
• I tried running the project locally and verified that there are no
  visible errors.

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