Improve accessiblity

[Zatalyz]

Hello,
A friend found an accessibility problem on the plugin display. "It is necessary to put the text which precedes the list in label". After exploring, I think I corrected this, in the helper.php file.

ligne 233, base :

$out .= '<span>' . $this->getLang('translations');
if($this->getConf('about')) $out .= $this->showAbout();
$out .= ':</span> ';

Change to :

$out .= '<label for="translate">' . $this->getLang('translations');
if($this->getConf('about')) $out .= $this->showAbout();
$out .= ':</label> ';

ligne 261, base :
$out .= '<select name="id" class="' . $class . '">';

change to :
$out .= '<select name="id" id="translate" class="' . $class . '">';

I submit pull request when I found how make it :)

[splitbrain]

form elements have been removed with 6605eed