Add show_if and hide_if methods for routes and APIs, as well as proper comparison of feature values

features/__init__.py

@@ -2,4 +2,24 @@ def import_features(config_dict):
   for feature, feature_val in config_dict.items():
     if feature.startswith('FEATURE_'):
       feature_name = feature[8:]
-      globals()[feature_name] = feature_val
+      globals()[feature_name] = FeatureNameValue(feature_name, feature_val)
+
+
+class FeatureNameValue(object):
+  def __init__(self, name, value):
+    self.value = value
+    self.name = name
+
+  def __str__(self):
+    return '%s => %s' % (self.name, self.value)
+
+  def __repr__(self):
+    return self.value
+
+  def __cmp__(self, other):
+    return self.value.__cmp__(other)
+
+  def __nonzero__(self):
+    return self.value.__nonzero__()
+
+