Move to select2 4.0.0 (without the rc part)

include/client/header.inc.php

@@ -48,7 +48,7 @@ if ($lang) {
     <script type="text/javascript" src="<?php echo ROOT_PATH; ?>js/redactor.min.js"></script>
     <script type="text/javascript" src="<?php echo ROOT_PATH; ?>js/redactor-plugins.js"></script>
     <script type="text/javascript" src="<?php echo ROOT_PATH; ?>js/redactor-osticket.js"></script>
-    <script type="text/javascript" src="<?php echo ROOT_PATH; ?>js/select2.full.min.js"></script>
+    <script type="text/javascript" src="<?php echo ROOT_PATH; ?>js/select2.min.js"></script>
     <?php
     if($ost && ($headers=$ost->getExtraHeaders())) {
         echo "\n\t".implode("\n\t", $headers)."\n";

include/staff/footer.inc.php

@@ -45,7 +45,7 @@ if(is_object($thisstaff) && $thisstaff->isStaff()) { ?>
 <script type="text/javascript" src="./js/scp.js"></script>
 <script type="text/javascript" src="<?php echo ROOT_PATH; ?>js/jquery-ui-1.10.3.custom.min.js"></script>
 <script type="text/javascript" src="<?php echo ROOT_PATH; ?>js/filedrop.field.js"></script>
-<script type="text/javascript" src="<?php echo ROOT_PATH; ?>js/select2.full.min.js"></script>
+<script type="text/javascript" src="<?php echo ROOT_PATH; ?>js/select2.min.js"></script>
 <script type="text/javascript" src="./js/tips.js"></script>
 <script type="text/javascript" src="<?php echo ROOT_PATH; ?>js/redactor.min.js"></script>
 <script type="text/javascript" src="<?php echo ROOT_PATH; ?>js/redactor-osticket.js"></script>

scp/css/scp.css

@@ -2699,3 +2699,8 @@ a.attachment {
     font-weight: bold;
     margin-bottom: 0.3em;
 }
+
+/* FIXME: Drop this with select2 4.0.1
+ * Fixes a rendering issue on Safari
+ */
+.select2-search__field{-webkit-appearance: textfield;}