OTRS enable login autocomplete in Firefox

if your username and password weren't filled out with firefox password manager you should remove readonly attribute in Login.dtl file.

Wrong:

<div class="Field"> 

<input type="text" id="User" name="User"  class="W50pc" autocomplete="off"  

readonly="readonly" />
</div>

Correct:

<div class="Field"> 

<input type="text" id="User" name="User"  class="W50pc" />
</div>