Updates the password reset page to use the new theme.
Adds new endpoint '/api/v0/auth/reset-password'
for password reset.
Additionally, updates the link-clicking mail simulator to only
click links with a specified attribute. Otherwise, the password reset
cancellation link would be clicked before the password reset link
could be accessed, rendering testing impossible.
Change-Id: I8fde74ef7ad980880a7bf6558e3b9ed31509a393
