move Function#_try to common
move css initializer to ldr
enclose ld_check with closure
comment out unused methods
gatther view methods
remove unused buttons
remove unused button class
remove unused mouse_over method
remove unused as_event
enclose about API Key with closure
enclose Hook and EventTrigger
add namepsace to invoke_hook and register_hook
enclose updater
enclose dom cacher
move dom cache to ldr
extract event_hook.js from main.js
extract event_trigger.js from main.js
move api key initializer to ldr
extract hotkey_manager and updater from main
move back API key extractor