trac #569 and trac #711 add missing utf-8 headers and removed extraneous argument in startHTML calls

lib/clienterroraction.php

@@ -70,7 +70,7 @@ class ClientErrorAction extends ErrorAction
                                417 => 'Expectation Failed');
         $this->default = 400;
     }
-    
+
     // XXX: Should these error actions even be invokable via URI?
     
     function handle($args)

lib/servererroraction.php

@@ -67,7 +67,7 @@ class ServerErrorAction extends ErrorAction
         
         $this->default = 500;
     }
-    
+
     // XXX: Should these error actions even be invokable via URI?
     
     function handle($args)

lib/util.php

@@ -1391,7 +1391,7 @@ function common_negotiate_type($cprefs, $sprefs)
     }
 
     $bestq = 0;
-    $besttype = "text/html";
+    $besttype = 'text/html';
 
     foreach(array_keys($combine) as $type) {
         if($combine[$type] > $bestq) {
@@ -1400,6 +1400,9 @@ function common_negotiate_type($cprefs, $sprefs)
         }
     }
 
+    if ('text/html' === $besttype) {
+        return "text/html; charset=utf-8";
+    }
     return $besttype;
 }