[depends] section if resource.config

Now groups in resource.config['depends'] can
define another groups from the same file as
their dependencies

ckan/lib/fanstatic_resources.py

@@ -157,8 +157,12 @@ def create_resource(path, lib_name, count, inline=False):
                 if resource not in depends:
                     depends[resource] = []
                 for dep in depends[group]:
-                    if dep not in depends[resource]:
-                        depends[resource].append(dep)
+                    if dep not in groups:
+                        dep_resources = [dep]
+                    else:
+                        dep_resources = groups[dep]
+                    diff = set(dep_resources).difference(depends[resource])
+                    depends[resource].extend(diff)
 
     # process each .js/.css file found
     resource_list = []