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

views/login/signup.php

@@ -22,6 +22,7 @@
                  --><button id="resetSignupButton" class="gray marginTop marginLeft" type="button">Reset</button>
                 <?php endif; ?>
             </div>
+            <p class="center marginTop"><a href="/login" title="Login">Already have an account?</a></p>
             <hr>
             <div class="center">
                 <a class="button yellow" href="/login/google" title="Signup with Google">Signup with Google</a>