certificates: small tweaks

* US and CA are in the alphabetic list already; no more favouritism.

* Use require_once consistently.  Minor header tweaks.

* Replace legacy State/City info and fix spelling for "Saschsen".

Nice touch Jos, I had a big smile on my face while skimming that
commit.  :)

src/etc/ca_countries

-US United States of America
-CA Canada
 AX Aland Islands
 AD Andorra
 AE United Arab Emirates

src/www/system_camanager.php

 <?php
+
 /*
-	Copyright (C) 2014-2015 Deciso B.V.
+    Copyright (C) 2014-2015 Deciso B.V.
     Copyright (C) 2008 Shrew Soft Inc.
     All rights reserved.
 
@@ -26,8 +27,8 @@
     POSSIBILITY OF SUCH DAMAGE.
 */
 
-require("guiconfig.inc");
-require_once("certs.inc");
+require_once('guiconfig.inc');
+require_once('certs.inc');
 
 $ca_methods = array(
 	"existing" => gettext("Import an existing Certificate Authority"),
@@ -526,7 +527,7 @@ function method_change() {
 											&nbsp;
 											<em><?=gettext("ex:");?></em>
 											&nbsp;
-											<?=gettext("Saksen");?>
+											<?=gettext("Sachsen");?>
 										</td>
 									</tr>
 									<tr>

src/www/system_certmanager.php

 <?php
+
 /*
-	Copyright (C) 2014-2015 Deciso B.V.
+    Copyright (C) 2014-2015 Deciso B.V.
     Copyright (C) 2008 Shrew Soft Inc.
     All rights reserved.
 
@@ -26,8 +27,8 @@
     POSSIBILITY OF SUCH DAMAGE.
 */
 
-require("guiconfig.inc");
-require_once("certs.inc");
+require_once('guiconfig.inc');
+require_once('certs.inc');
 
 $cert_methods = array(
 	"import" => gettext("Import an existing Certificate"),
@@ -890,7 +891,7 @@ function internalca_change() {
 												&nbsp;
 												<em>ex:</em>
 												&nbsp;
-												<?=gettext("Texas");?>
+												<?=gettext("Sachsen");?>
 											</td>
 										</tr>
 										<tr>
@@ -900,7 +901,7 @@ function internalca_change() {
 												&nbsp;
 												<em>ex:</em>
 												&nbsp;
-												<?=gettext("Austin");?>
+												<?=gettext("Leipzig");?>
 											</td>
 										</tr>
 										<tr>