Add English (United Kingdom) translation, thanks to Robert Readman.

ChangeLog

@@ -41,6 +41,7 @@ $HeadURL: https://phpmyadmin.svn.sourceforge.net/svnroot/phpmyadmin/trunk/phpMyA
 + rfe #2937840 [doc] Add some interesting configs to config.sample.inc.php.
 + rfe #2792992 [doc] Added advice to re-login after changing pmadb settings
 + patch #2952353 [interface] Prefill "Copy table to" in tbl_operations.php, thanks to iinl
++ [lang] Add English (United Kingdom) translation, thanks to Robert Readman.
 
 3.3.1.0 (not yet released)
 - bug #2941037 [core] Database structure not sorted by table correctly 

libraries/select_lang.lib.php

@@ -205,6 +205,7 @@ function PMA_langList()
         'de-utf-8'    => array('de|german', 'german-utf-8', 'de', 'Deutsch'),
         'el-utf-8'    => array('el|greek',  'greek-utf-8', 'el', 'Ελληνικά'),
         'en-utf-8'    => array('en|english',  'english-utf-8', 'en', ''),
+        'en-gb-utf-8' => array('en[_-]gb|english (United Kingdom)',  'english-gb-utf-8', 'en', ''),
         'es-utf-8'    => array('es|spanish', 'spanish-utf-8', 'es', 'Español'),
         'et-utf-8'    => array('et|estonian', 'estonian-utf-8', 'et', 'Eesti'),
         'eu-utf-8'    => array('eu|basque', 'basque-utf-8', 'eu', 'Euskara'),

translators.html

@@ -191,6 +191,13 @@
     </td>
 </tr>
 
+<tr id="english-gb">
+    <td>English (United Kingdom)</td>
+    <td>
+        Robert Readman (robert_readman@hotmail.com)
+    </td>
+</tr>
+
 <tr id="estonian">
     <td>Estonian</td>
     <td>