move frontend&backend selection in front of display button

% else {

      %= text_field 'station'

% }

      %= submit_button 'Display'

    </div>

  </div>

  <div class="break"></div>

  <span class="optional">Optionale Einstellungen:</span>

  <div class="field">

    <div class="desc">

      Nur Züge über

      Frontend

    </div>

    <div>

      %= text_field 'via'

      %= select_field mode => [ ['App / Infoscreen' => 'clean'], ['Bahnhofstafel' => 'multi'], ['Gleis' => 'single'] ]

    </div>

  </div>

  <div class="field">

    <div class="desc">

      Gleise

      Backend

    </div>

    <div>

      %= text_field 'platforms'

      %= select_field backend => [ ['IRIS' => 'iris'], ['RIS' => 'ris'] ]

    </div>

  </div>

  <div class="field">

    %= submit_button 'Anzeigen'

  <div>

  </div>

  <div class="break"></div>

  <span class="optional">Optionale Einstellungen:</span>

  <div class="field">

    <div class="desc">

      Verspätungen <5 Minuten ignorieren

      Nur Züge über

    </div>

    <div>

      %= check_box 'hidelowdelay' => 1

      %= text_field 'via'

    </div>

  </div>

  <div class="field">

    <div class="desc">

      Layout

      Gleise

    </div>

    <div>

      %= select_field mode => [ ['App / Infoscreen' => 'clean'], ['Bahnhofstafel' => 'multi'], ['Gleis' => 'single'] ]

      %= text_field 'platforms'

    </div>

  </div>

  <div class="field">

    <div class="desc">

      Backend

      Verspätungen <5 Minuten ignorieren

    </div>

    <div>

      %= select_field backend => [ ['IRIS' => 'iris'], ['RIS' => 'ris'] ]

      %= check_box 'hidelowdelay' => 1

    </div>

  </div>

  <div class="field">