Update 'gen_stats'

This was hard to mess with indents. Why, ben, why?

blacklist.json.example

@@ -0,0 +1 @@
+{"blacklist":["#channel1","#channel2"]}

gen_stats

@@ -2,6 +2,10 @@
 import requests, json
 import xml.etree.ElementTree as xml
 
+try:
+    with open("blacklist.json") as f:
+        BLACKLIST = json.load(f)["blacklist"]
+
 r = requests.get("http://localhost:8081/stats")
 r.raise_for_status()
 out = {}
@@ -35,8 +39,8 @@ for schannel in schannels:
         and channel["topic"] != "No topic set"
     ):
         channel["topic"] = "Topic hidden"
-    if channel["name"] == "#secret-sudoers":
-        # no stat output for #secret-sudoers! it's a sekrit club of the ~team sysadmins!
+    if channel["name"] in BLACKLIST:
+        # no stat output for blacklisted channels!!!!
         continue
     channel["webchatlink"] = "https://web.tilde.chat/?join=" + channel["name"].lstrip(
         "#"