Added german language and improved existing ones

lang/en/settings.php

@@ -1,6 +1,6 @@
 <?php
 /**
- * english language file for sqlquery plugin
+ * English language file for sqlquery plugin
  *
  * @author George Pirogov <i1557@yandex.ru>
  */
@@ -8,6 +8,10 @@
 // keys need to match the config setting name
 // $lang['fixme'] = 'FIXME';
 
+$lang['Host'] = 'Default MySQL server address (DNS or IP)';
+$lang['DB'] = 'MySQL database name';
+$lang['user'] = 'Database username';
+$lang['password'] = 'Database password';
 
 
 //Setup VIM: ex: et ts=4 :