MAPG-141 add and fix some links to login/signup

views/login/activate.php

@@ -3,6 +3,6 @@
 @section(main)
     <h2>Account activation</h2>
     <div class="box">
-        <p class="error justify">Activation failed. Please check the link you entered or retry <a href="/signup" title="Sign up">sign up</a>!</p>
+        <p class="error justify">Activation failed. Please check the link you entered, or retry <a href="/signup" title="Sign up">signing up</a>!</p>
     </div>
 @endsection