Add automatic confirmation mail after changing e-mail adress.

app/templates/auth/email/confirm.html.j2

@@ -1,5 +1,4 @@
 <p>Dear {{ user.username }},</p>
-<p>Welcome to <b>Opaque</b>!</p>
 <p>To confirm your account please <a href="{{ url_for('auth.confirm', token=token, _external=True) }}">click here</a>.</p>
 <p>Alternatively, you can paste the following link in your browser's address bar:</p>
 <p>{{ url_for('auth.confirm', token=token, _external=True) }}</p>

app/templates/auth/email/confirm.txt.j2

@@ -1,7 +1,5 @@
 Dear {{ user.username }},
 
-Welcome to Opaque!
-
 To confirm your account please click on the following link:
 {{ url_for('auth.confirm', token=token, _external=True) }}