Called earlier than deck_conf_will_show, allowing add-on authors to perform UI modifications before the deck config is loaded.
Introduces three new hooks: * deck_conf_will_show: Allows adding or modifying widgets * deck_conf_did_load_config: Allows add-on widgets to read from config * deck_conf_will_save_config: Allows add-on widgets to write to config
hopefully that's the last of it
