Remove keygen usage from web client, effectlively removing certificate creation through web client (fixes #274).

server.conf.in

@@ -154,9 +154,7 @@ enabled = false
 ;   The userid is provided as CommonName with a certificate provided with TLS
 ;   client authentication. When you use this with a front end proxy for TLS
 ;   termination, that proxy has to validate the certificate and inject certain
-;   headers into the proxy connection. In certificate mode the server can act as
-;   a signing CA to sign incoming user certificate requests with a private key
-;   when allowRegistration is true. While certificate mode offers the highest
+;   headers into the proxy connection. While certificate mode offers the highest
 ;   security it is currently considered experimental and the user experience
 ;   varies between browsers and platforms.
 ;mode = sharedsecret

static/partials/settings.html

@@ -44,19 +44,12 @@
           <div class="form-group profile-yourid">
             <label class="col-xs-4 control-label">{{_('Your ID')}}</label>
             <div ng-switch="withUsersMode">
-              <form ng-switch-when="certificate" class="col-xs-8" target="users_registration_certificate_iframe">
-                <div ng-if="!userid">
-                  <keygen class="hidden" name="pubkey"/>
-                  <label ng-if="!userid && withUsersRegistration && usersettings.registerUserid">
-                    <button class="btn btn-small btn-primary" ng-click="usersettings.registerUserid($event)">{{_('Register')}}</button>
-                  </label>
-                  <iframe class="hidden" name="users_registration_certificate_iframe"></iframe>
-                </div>
+              <div ng-switch-when="certificate" class="col-xs-8">
                 <div ng-if="userid">
                   <p class="form-control-static well well-sm">{{userid|displayUserid}}</p>
                   <p class-"help-block">{{_('Authenticated by certificate. To log out you have to remove your certificate from the browser.')}}</p>
                 </div>
-              </form>
+              </div>
               <div ng-switch-default class="col-xs-8">
                 <div ng-if="!userid && withUsersRegistration">
                   <label ng-if="usersettings.loginUserid">