Improve Bongacams online check

- check new (?) field isOnline before attempting to get stream sources (was failing due to missing json field when offline)

common/src/main/java/ctbrec/sites/bonga/BongaCamsModel.java

@@ -64,22 +64,30 @@ public class BongaCamsModel extends AbstractModel {
         setDisplayName(performerData.optString("displayName"));
         String chatType = performerData.optString("showType");
         boolean isAway = performerData.optBoolean("isAway");
+        
+        // looks like isOnline key is new. Treat it's absence as true (old behavior)
+        boolean jsonIsOnline = performerData.optBoolean("isOnline", true);
 
-        onlineState = mapState(chatType);
+        if (!jsonIsOnline) {
-        if (onlineState == ONLINE) {
+            onlineState = OFFLINE;
-            if (isStreamAvailable()) {
+            online = false;
-                if (isAway) {
+        } else {
-                    onlineState = AWAY;
+            onlineState = mapState(chatType);
-                    online = false;
+            if (onlineState == ONLINE) {
+                if (isStreamAvailable()) {
+                    if (isAway) {
+                        onlineState = AWAY;
+                        online = false;
+                    } else {
+                        online = true;
+                    }
                 } else {
-                    online = true;
+                    online = false;
+                    onlineState = AWAY;
                 }
             } else {
                 online = false;
-                onlineState = AWAY;
             }
-        } else {
-            online = false;
         }
         return online;
     }