add options page, and switch to use storage.sync
AssistantExt (base) version 1.0.0 (Support options page)
merge from base version 1.0.0
change test to use storage.sync according to the change in config_loader.js
fix test; reformat options page
AssistantExt (base) version 1.0.1
merge base version 1.0.1
AssistantExt (with libs) version 0.4.0 (merge base version 1.0.1)