Activates a user account by email. Requires the id of the user being activated and the secret. The link to activate a user account is generated by the register action and is inserted in the registration email.
<a href="/action/v2/activateaccount?u=555&s=72sdf34sD025ehtSFJBskdjfs6280hgM">Activate account</a>
|u||Required||Numeric string - user id to confirm the account|
|s||Required||Secret string of 32 characters|