Do initial settings fetch synchronously in Greasemonkey.

src/main/Main.coffee

@@ -71,7 +71,7 @@ Main =
     items = {}
     items[key] = undefined for key of Conf
     items['previousversion'] = undefined
-    $.get items, (items) ->
+    ($.getSync or $.get) items, (items) ->
 
       # Enforce JS whitelist
       jsWhitelist = items['jsWhitelist'] ? Conf['jsWhitelist']

src/platform/$.coffee

@@ -570,11 +570,12 @@ $.get = (key, val, cb) ->
   else
     items = key
     cb = val
-  $.queueTask ->
-    for key of items
-      if val = $.getValue g.NAMESPACE + key
-        items[key] = JSON.parse val
-    cb items
+  $.queueTask $.getSync, items, cb
+
+$.getSync = (items, cb) ->
+  for key of items when (val2 = $.getValue g.NAMESPACE + key)
+    items[key] = JSON.parse val2
+  cb items
 
 $.set = (keys, val, cb) ->
   if typeof keys is 'string'