Part of the code for article http://rocinantesoftware.blogspot.com.es/2015/11/prestashop-improved-customer-password.html

password.tpl

{capture name=path}<a href="{$link->getPageLink('authentication', true)|escape:'html':'UTF-8'}" title="{l s='Authentication'}" rel="nofollow">{l s='Authentication'}</a><span class="navigation-pipe">{$navigationPipe}</span>{l s='Forgot your password'}{/capture}
{if isset($change_password)}
	<h1 class="page-heading">{l s='Create a new password'}</h1>
{elseif isset($password_changed)}
	<h1 class="page-heading">{l s='Password Change'}</h1>
{else}
	<h1 class="page-heading">{l s='Forgot your password?'}</h1>
{/if}


{include file="$tpl_dir./errors.tpl"}

{if isset($confirmation) && $confirmation == 1}
	<p class="alert alert-success">{l s='Your password has been successfully reset and a confirmation has been sent to your email address:'} {if isset($customer_email)}{$customer_email|escape:'html':'UTF-8'|stripslashes}{/if}</p>
{elseif isset($confirmation) && $confirmation == 2}
	<p class="alert alert-success">{l s='A confirmation email has been sent to your address:'} {if isset($customer_email)}{$customer_email|escape:'html':'UTF-8'|stripslashes}{/if}</p>
{elseif isset($password_changed)}
	<p class="alert alert-success">{l s='Password changed correctly.'} </p>
{elseif isset($change_password)}
	<div class="clearfix">
		<form action="{$link->getPageLink('password', true)|escape:'html':'UTF-8'}"  method="post" class="box col-xs-12 col-sm-8 col-md-4" id="form_forgotpassword">
			<fieldset>
				<div class="form-group">
					<label for="new_passwd">{l s='New Password'}</label>
					<input class="form-control" type="password" id="new_passwd" name="new_passwd" data-validate="isPasswd"  />
				</div>
				<div class="form-group">
					<label for="new_passwd_confirm">{l s='Confirm New Password'}</label>
					<input class="form-control" type="password" id="new_passwd_confirm" name="new_passwd_confirm" data-validate="isPasswd"  />
				</div>
				<p class="submit">
					<button type="submit" class="btn-secondary"><span>{l s='Change Password'}<i class="icon-chevron-right right"></i></span></button>
				</p>
			</fieldset>
			{if isset($id_customer)}<input type="hidden" name="id_customer" value="{$id_customer|intval}" />{/if}
		</form>
	</div>
{else}
	<p>{l s='Please enter the email address you used to register. We will then send you a new password. '}</p>

	<div class="clearfix">
		<form action="{$request_uri|escape:'html':'UTF-8'}" method="post" class="box col-xs-12 col-sm-8 col-md-4" id="form_forgotpassword">
			<fieldset>
				<div class="form-group">
					<label for="email">{l s='Email address'}</label>
					<input class="form-control" type="email" id="email" name="email" value="{if isset($smarty.post.email)}{$smarty.post.email|escape:'html':'UTF-8'|stripslashes}{/if}" />
				</div>
				<p class="submit">
					<button type="submit" class="btn-secondary"><span>{l s='Retrieve Password'}<i class="icon-chevron-right right"></i></span></button>
				</p>
			</fieldset>
		</form>
	</div>

	<p>{l s='If you have forgotten your email address, or cannot enter into your email account, please contact customer support.'}</p>
{/if}
<ul class="clearfix footer_links">
	<li><a class="btn-link" href="{$link->getPageLink('authentication')|escape:'html':'UTF-8'}" title="{l s='Back to Login'}" rel="nofollow"><span><i class="icon-chevron-left"></i>{l s='Back to Login'}</span></a></li>
</ul>