Fix more UX/design debt

[praseodym]

Fixes #101
Fixes part of #263

• Show account setup alert only after setup page
  • Move "Je account is ingesteld" to overview page (@jorisleker also see my comment in Figma)
  • Only show alert after account setup page
  • Remove close button from "Alle stembureaus zijn twee keer ingevoerd"
    alert
• Fix spacing on alerts
  • Fixes margin on "Alle stembureaus zijn twee keer ingevoerd"
    alert button
• Fix styling of medium size button
  • Fixes padding of "Alle stembureaus zijn twee keer ingevoerd" alert
    button
• Keep overview page empty while loading
• Set fallback font for data entry input fields
• Use number font on polling station number input

[jorisleker]

@praseodym how to test this: 'Only show alert after account setup page'? When I open http://localhost:8080/, it automatically redirects me to /overview, without showing account creating / login screens.

Also: what curl command should I run to finalize my input and see the "Alle stembureaus zijn twee keer ingevoerd" alert?

[praseodym]

@praseodym how to test this: 'Only show alert after account setup page'? When I open http://localhost:8080/, it automatically redirects me to /overview, without showing account creating / login screens.

In #259, the development screen was moved to /dev. The user login screen is still at /user/login.

Also: what curl command should I run to finalize my input and see the "Alle stembureaus zijn twee keer ingevoerd" alert?

curl -v -XPOST http://127.0.0.1:8080/api/polling_stations/1/data_entries/1/finalise after submitting a valid data entry form (all zeroes is valid).