I think that in Admin Dashbord Tutorial there is a small, unvisible mistake: label for="date-picker-example" is not correct. Just for the sake of precision, "label for=" should refer to "id=", in this case "from" or "to".

Expected behavior

 <div class="md-form">
 <input placeholder="Selected date" type="text" id="from" class="form-control datepicker">
   <label for="from">From</label>
</div>
<div class="md-form">
  <input placeholder="Selected date" type="text" id="to" class="form-control datepicker">
    <label for="to">To</label>
</div>

Actual behavior

<div class="md-form">
 <input placeholder="Selected date" type="text" id="from" class="form-control datepicker">
   <label for="date-picker-example">From</label>
</div>
<div class="md-form">
  <input placeholder="Selected date" type="text" id="to" class="form-control datepicker">
    <label for="date-picker-example">To</label>
</div>

Resources (screenshots, code snippets etc.)