Hide registration link if the user doesn't have 'Web Registration' permission.

(patch [SF#828141]).

Author: Johannes Gijsbers

templates/classic/html/page.html

@@ -76,8 +76,8 @@
     <input size="10" name="__login_name"><br>
     <input size="10" type="password" name="__login_password"><br>
     <input type="submit" name=":action" value="Login"><br>
-    <span tal:replace="structure request/indexargs_form" />
-    <a href="user?:template=register">Register</a><br>
+    <a href="user?:template=register"
+       tal:condition="python:request.user.hasPermission('Web Registration')">Register<br></a>
     <a href="user?:template=forgotten">Lost&nbsp;your&nbsp;login?</a><br>
    </p>
   </form>

templates/minimal/html/page.html

@@ -30,7 +30,8 @@
     <input type="submit" name=":action" value="login">
     <span tal:replace="structure request/indexargs_form" />
    </form>
-   <a href="user?:template=register">Register</a>
+   <a tal:condition="python:request.user.hasPermission('Web Registration')"
+      href="user?:template=register">Register</a>
   </p>
 
   <p class="userblock" tal:condition="python:request.user.username != 'anonymous'">