Add a few comments to MFC data structures

src/main/java/ctbrec/sites/mfc/Model.java

@@ -16,7 +16,15 @@ public class Model {
     private Integer mg;
     private Integer missmfc;
     private Integer newModel;
+
+    /**
+     * Miss MFC rank
+     */
     private Integer rank;
+
+    /**
+     * Viewers in room
+     */
     private Integer rc;
     private Integer sfw;
     private String topic;

src/main/java/ctbrec/sites/mfc/SessionState.java

@@ -6,10 +6,22 @@ import java.util.Map;
 public class SessionState {
 
     private Integer lv;
+
+    /**
+     * Model name
+     */
     private String nm;
     private Integer pid;
     private Integer sid;
+
+    /**
+     * User id
+     */
     private Integer uid;
+
+    /**
+     * Online state @see {@link State}
+     */
     private Integer vs;
     private User u;
     private Model m;