Add order-num parameter to all graphics presets

Video/high-quality-preset.xml

@@ -4,6 +4,7 @@
   <id>high-quality</id>
   <name>High</name>
   <description>High quality settings with the most demanding features disabled.</description>
+  <order-num>3</order-num>
 
   <settings>
     <sim>

Video/low-quality-preset.xml

@@ -4,6 +4,7 @@
   <id>low-quality</id>
   <name>Low</name>
   <description>Prioritize performance over eye candy.</description>
+  <order-num>1</order-num>
 
   <settings>
     <sim>

Video/medium-quality-preset.xml

@@ -4,6 +4,7 @@
   <id>medium-quality</id>
   <name>Medium</name>
   <description>A nice tradeoff between performance and eye candy.</description>
+  <order-num>2</order-num>
 
   <settings>
     <sim>

Video/minimal-quality-preset.xml

@@ -4,6 +4,7 @@
   <id>minimal-quality</id>
   <name>Minimal</name>
   <description>Minimal settings for low-power laptops or very old systems.</description>
+  <order-num>0</order-num>
 
   <settings>
     <sim>

Video/ultra-quality-preset.xml

@@ -4,6 +4,7 @@
   <id>ultra-quality</id>
   <name>Ultra</name>
   <description>Maximum settings for very powerful systems.</description>
+  <order-num>4</order-num>
 
   <settings>
     <sim>