moved register-button for course into own line

templates/course.hamlet

@@ -30,14 +30,13 @@
         $maybe regTo   <- courseRegisterTo   course
           \ bis #{formatTimeGerWD regTo}
 
+    <tr>
+      <th>
+      <td>
         $# if allowed to register
         <div .course__registration.container>
           <button class="btn btn-primary">
             <a href="#">Anmelden
-        $# if already registered
-        <div .course__registration.container>
-          <button class="btn btn-info">
-            <a href="#">Abmelden
 
   $# <form method=post action=@{CourseR tid csh CShow} enctype=#{regEnctype}>
   $#   ^{regWidget}