offer possibility to deal with max-rank exceeding

StorrageBackend.py

@@ -164,7 +164,7 @@ def getRankRange(start, end, revalidateRanks=True):
 
     if revalidateRanks:
         updatePlayerRanks(revalidateRanks)
-
+    
+    if start > len(playerRankList) or start >= end or end >= len(playerRankList):
+        return len(playerRankList)
     return playerRankList[start:end]
-
-

httpAPI.py

@@ -26,6 +26,8 @@ def getRankRange():
         return invalidParameters()
 
     players = SB.getRankRange(start, end)
+    if type(players) == int:
+        return "MAXENTRY:{}".format(players)
     return "\n".join([p.serialize() for p in players])
 
 @app.route('/findplayer')