changed "ariel" to "arial"

README_WKHTMLTOPDF

@@ -212,7 +212,7 @@ Items marked * are only available using patched QT.
 
 =========================> Headers And Footer Options <=========================
     --footer-center * <text>          Centered footer text
-    --footer-font-name * <name>       Set footer font name (default Ariel)
+    --footer-font-name * <name>       Set footer font name (default Arial)
     --footer-font-size * <size>       Set footer font size (default 12)
     --footer-html * <url>             Adds a html footer
     --footer-left * <text>            Left aligned footer text
@@ -223,7 +223,7 @@ Items marked * are only available using patched QT.
     --footer-spacing * <real>         Spacing between footer and content in mm
                                       (default 0)
     --header-center * <text>          Centered header text
-    --header-font-name * <name>       Set header font name (default Ariel)
+    --header-font-name * <name>       Set header font name (default Arial)
     --header-font-size * <size>       Set header font size (default 12)
     --header-html * <url>             Adds a html header
     --header-left * <text>            Left aligned header text

src/lib/pdfsettings.cc

@@ -352,7 +352,7 @@ Size::Size():
 
 HeaderFooter::HeaderFooter():
 	fontSize(12),
-	fontName("Ariel"),
+	fontName("Arial"),
 	left(""),
 	right(""),
 	center(""),

src/lib/tocstylesheet.cc

@@ -47,7 +47,7 @@ void dumpDefaultTOCStyleSheet(QTextStream & stream, settings::TableOfContent & s
 		   << "          h1 {" << endl
 		   << "            text-align: center;" << endl
 		   << "            font-size: 20px;" << endl
-		   << "            font-family: ariel;" << endl
+		   << "            font-family: arial;" << endl
 		   << "          }" << endl;
 	if (s.useDottedLines)
 		stream << "          div {border-bottom: 1px dashed rgb(200,200,200);}" << endl;
@@ -55,7 +55,7 @@ void dumpDefaultTOCStyleSheet(QTextStream & stream, settings::TableOfContent & s
 		   << "          li {list-style: none;}" << endl
 		   << "          ul {" << endl
 		   << "            font-size: 20px;" << endl
-		   << "            font-family: ariel;" << endl
+		   << "            font-family: arial;" << endl
 		   << "          }" << endl
 		   << "          ul ul {font-size: " << (s.fontScale*100.0) << "%; }" << endl
 		   << "          ul {padding-left: 0em;}" << endl