anchor.diff:                </ul>
               </li>
               <% else %>
  -            <li><%= link_to("<span class='fa fa-user'></span>&nbsp;#{t".Login"}".html_safe, new_user_session_path)  %></li>
  +            <li><%= link_to("<span class='fa fa-user'></span>&nbsp;
  +              #{t".Login"}".html_safe, new_user_session_path)  %></li>
               <% end %>
             </ul>
           </div><!-- /.navbar-collapse -->
         </div><!-- /.container-fluid -->
       </nav>
       <div class="container">
  +    <style>
  +      #forkongithub a{
  +        background:#717171;
  +        color:#fff;
  +        text-decoration:none;
  +        font-family:arial,sans-serif;
  +        text-align:center;
  +        font-weight:bold;
  +        padding:5px 40px;
  +        font-size:0.7rem;
  +        line-height:1rem;
  +        position:relative;
  +        transition:0.5s;
  +      }
  +      #forkongithub a::before,#forkongithub a::after{
  +        content:"";
  +        width:100%;
  +        display:block;
  +        position:absolute;
  +        top:1px;
  +        left:0;
  +        height:1px;
  +        background:#fff;
  +      }
  +      #forkongithub a::after{bottom:1px;
  +        top:auto;
  +      }
  +      #forkongithub {
  +        display: none;
  +      }
  +      @media screen and (min-width:800px){
  +        #forkongithub:hover a {
  +          box-shadow:4px 4px 10px rgba(0,0,0,0.4);
  +        }
  +        #forkongithub{
  +          pointer-events: none;
  +          position:absolute;
  +          display:inline-block;
  +          top:50px;
  +          right:0;
  +          overflow:hidden;
  +          height:100px;
  +          width: 100px;
  +          z-index:0;
  +        }
  +        #forkongithub a{
  +          pointer-events: initial;
  +          width:200px;
  +          position:absolute;
  +          top:20px;
  +          right:-70px;
  +          transform:rotate(45deg);
  +          -webkit-transform:rotate(45deg);
  +          -ms-transform:rotate(45deg);
  +          -moz-transform:rotate(45deg);
  +          -o-transform:rotate(45deg);
  +          box-shadow:4px 4px 10px rgba(0,0,0,0.6);
  +        }
  +      }
  +      </style>
  +      <span id="forkongithub"><a href="https://github.com/renemeye/pr3zale">Fork me on GitHub</a></span>
         <% unless cookies_accepted? %>
         <div class="alert alert-info" role="alert">
           <h5><%=t".EU cookie policy"%></h5>
  
positive.code:           <% if user_signed_in? %>
            <li class="dropdown">
              <a href="#" class="dropdown-toggle" data-toggle="dropdown"><span class="fa fa-user"></span>&nbsp;
                <%=current_user.email %> <%="<span class='badge'>#{t"users.Cooperator"}</span>".html_safe if current_user.is_cooperator? @event %><%="<span class='badge'>#{t"users.Coordinator"}</span>".html_safe if current_user.is_coordinator? @event %>
                <span class="caret"></span></a>
                <ul class="dropdown-menu" role="menu">
  
negative.code: 
        <% flash.each do |name, msg| %>
          <%= content_tag :div, :class => "alert alert-#{ name == "error" ? "danger" : "success" } alert-dismissable" do %>
            <button type="button" class="close" data-dismiss="alert" aria-hidden="true">&times;
            </button>
            <%= msg %>
          <% end %>
        <% end %>
  