Move frontpage_dart option into new live config.

Enabling home page roadblocks has never been so easy!

r2/example.ini

@@ -351,9 +351,6 @@ static_secure_domain =
 static_pre_gzipped = false
 static_secure_pre_gzipped = false
 
-# make frontpage 100% dart
-frontpage_dart = false
-
 #  -- translator UI -- 
 # enable/disable access to the translation UI in /admin/i18n
 translator = true
@@ -497,3 +494,5 @@ beaker.session_secret = somesecret
 # is enabled, then this configuration will be found by the app in zookeeper. to
 # write it to zookeeper, use the writer script: scripts/write_live_config.
 [live_config]
+# make frontpage 100% dart
+frontpage_dart = false

r2/r2/lib/app_globals.py

@@ -131,7 +131,6 @@ class Globals(object):
             'disable_ratelimit',
             'amqp_logging',
             'read_only_mode',
-            'frontpage_dart',
             'allow_wiki_editing',
             'heavy_load_mode',
             's3_media_direct',
@@ -178,6 +177,9 @@ class Globals(object):
     }
 
     live_config_spec = {
+        ConfigValue.bool: [
+            'frontpage_dart',
+        ],
     }
 
     def __init__(self, global_conf, app_conf, paths, **extra):

r2/r2/lib/pages/pages.py

@@ -3501,7 +3501,7 @@ class ComScore(CachedTemplate):
 def render_ad(reddit_name=None, codename=None, keyword=None):
     if not reddit_name:
         reddit_name = g.default_sr
-        if g.frontpage_dart:
+        if g.live_config["frontpage_dart"]:
             return Dart_Ad("reddit.dart", reddit_name, keyword).render()
 
     try: