Various MitID fixes

[casperbiering]

This PR fixes the following issues:

• "No such combination ID (S4)" which I guess is due to me having both App + MitID chip authentication
• "Authentication failed: 'name'" this was due to hidden input without the name attribute

Besides, I have "management" access to 2 companies + "employee" access to 1 company. That caused these issues:

• Two identities was for the same company, meaning that it just showed the same company twice. So I've added the identity_detail.
• It looped over div.list-link-box but that meant that it only fetched the first company in the "management" section, so I've changed that to a.list-link.