add mail_form .gem
welcome Faun
Add feedback form modal

This finishes [#80576984]
Fix failing spec to represent desired behavior
Remove unnecessary specs
fix specs for site_admin
Add fullscreen overlay class

This switches the style of the overlay to white fullscreen
Convert feedback header to H1
tidying, per Riz's feedback
Do not explode if recipient has no email address
refactor specs for 2 emails: html and text
Merge branch 'master' into feedback-form
last pass styling
fix spec
add failing test for dashboard papers
allow user to see all papers with a role

assumes properly permissions papers are pushed
add form-control for consistent styling
Merge pull request #523 from Tahi-project/fix-spec

fix spec
move capybara specs to quint
tidying