Mac: Fix font rendering on HiDPI screens.

Render fonts in high dpi.

Task-number: QTCREATORBUG-7864
Change-Id: Ife6f281e537b9e300db1ceecc0b2703e78ace7e6
Reviewed-by: Morten Johan Sørvig <morten.sorvig@nokia.com>

src/app/Info.plist.in

@@ -2,6 +2,8 @@
 <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
 <plist version="1.0">
 <dict>
+        <key>NSPrincipalClass</key>
+        <string>NSApplication</string>
 	<key>CFBundleDocumentTypes</key>
 	<array>
 		<dict>