bump to v2 and fix url
More accuont info on settings and account-info endpoints (bug 1052625)

Create a new endpoint to lookup account source for an email to aid in
the Firefox Accounts migration.
Show the accounts `verified` status in the account settings endpoint.
Merge pull request #2585 from mstriemer/account-source-in-user-detail-1052625

Account source in user detail 1052625