Switch from traditional array syntax to short array syntax.
Refactor views regarding page title etc.
Send SMS challenge.
Verify phone possession.
Modify second factor list to display unverified second factors.
Add missing license header in bundle class.
Create SmsSecondFactorService and move sending of challenge into it.
Move proving of phone possession into second factor service.
Remove Tiqr second factor for now.
Move SMS challenge verification into second factor service.
Simplify route ids, SecondFactor:list translation keys.