fix icon and version

Closes: #16

Fixed the icon so Qt renders it properly, and actually renders it
properly in the About page. Also, scaled it up a bit

Changed launcher.svg icon to temporary Ouroboros logo

fixed genicons again

Fix version to 1.0.3 (making tag rn)

Install the PolyMC icon properly.

launcher/Application.cpp

@@ -1148,7 +1148,7 @@ void Application::setIconTheme(const QString& name)
 QIcon Application::getThemedIcon(const QString& name)
 {
     if(name == "logo") {
-        return QIcon(":/polymc.svg");
+        return QIcon(":/org.polymc.PolyMC.svg");
     }
     return XdgIcon::fromTheme(name);
 }