Fix various typos/bugs

qutebrowser/browser/adblock.py

@@ -292,7 +292,7 @@ class HostBlocker:
             message.info("adblock: Read {} hosts from {} sources.".format(
                 len(self._blocked_hosts), self._done_count))
 
-    @config.change_filter('content.host-blocking.lists')
+    @config.change_filter('content.host_blocking.lists')
     def on_config_changed(self):
         """Update files when the config changed."""
         if config.val.content.host_blocking.lists is None:

qutebrowser/config/configdata.yml

@@ -1054,7 +1054,7 @@ content.cookies.accept:
       - never: "Don't accept cookies at all."
   desc: Control which cookies to accept.
 
-cookies.cookies.store:
+content.cookies.store:
   default: true
   type: Bool
   desc: Whether to store cookies. Note this option needs a restart with QtWebEngine

qutebrowser/config/newconfig.py

@@ -139,7 +139,7 @@ class NewConfigManager(QObject):
         try:
             val = self._values[option]
         except KeyError as e:
-            raise configexc.NoOptionError(e)
+            raise configexc.NoOptionError(option)
         return val.typ.from_py(val.default)
 
 
@@ -173,7 +173,7 @@ class ConfigContainer:
         if configdata.is_valid_prefix(name):
             return ConfigContainer(manager=self._manager, prefix=name)
         # If it's not a valid prefix, this will raise NoOptionError.
-        self._manager.get(name)
+        return self._manager.get(name)
 
     def __setattr__(self, attr, value):
         if attr.startswith('_'):

qutebrowser/mainwindow/tabwidget.py

@@ -412,11 +412,11 @@ class TabBar(QTabBar):
         self.setFont(config.val.fonts.tabbar)
         self.set_icon_size()
 
-    @config.change_filter('tabs.favicon.scale')
+    @config.change_filter('tabs.favicons.scale')
     def set_icon_size(self):
         """Set the tab bar favicon size."""
         size = self.fontMetrics().height() - 2
-        size *= config.val.tabs.favicon.scale
+        size *= config.val.tabs.favicons.scale
         self.setIconSize(QSize(size, size))
 
     @config.change_filter('colors.tabs.bar.bg')