refactor: remove unused mod info and organize some stuff

launcher/minecraft/mod/ModDetails.h

@@ -5,13 +5,24 @@
 
 struct ModDetails
 {
+    /* Mod ID as defined in the ModLoader-specific metadata */
     QString mod_id;
+    
+    /* Human-readable name */
     QString name;
+    
+    /* Human-readable mod version */
     QString version;
+    
+    /* Human-readable minecraft version */
     QString mcversion;
+    
+    /* URL for mod's home page */
     QString homeurl;
-    QString updateurl;
+    
+    /* Human-readable description */
     QString description;
+
+    /* List of the author's names */
     QStringList authors;
-    QString credits;
 };