emails: expose profile link on registation email. Implements #3999.

rhodecode/templates/email_templates/user_registration.mako

@@ -1,21 +1,22 b''
 ## -*- coding: utf-8 -*-
 <%inherit file="base.mako"/>
 
 <%def name="subject()" filter="n,trim">
 RhodeCode new user registration
 </%def>
 
 ## plain text version of the email. Empty by default
 <%def name="body_plaintext()" filter="n,trim">
 
 A new user `${user.username}` has registered on ${h.format_date(date)}
 
 - Username: ${user.username}
 - Full Name: ${user.firstname} ${user.lastname}
 - Email: ${user.email}
+- Profile link: ${h.url('user_profile', username=user.username, qualified=True)}
 </%def>
 
 ## BODY GOES BELOW
 <div style="white-space: pre-wrap">
 ${body_plaintext()}
-</div>
  No newline at end of file
+</div>