+/*
+ * Returns the currently "selected" graph config.
+ *
+ * This function evaluates the HTTP query parameters and searches for a
+ * matching graph config structure. If a matching graph config is found, it
+ * will return a pointer to the graph config. Do *not* free or call
+ * graph_destroy() on this pointer. If no graph is found or parameters are
+ * incomplete, NULL is returned.
+ */