use pnotify to display a notification message within page
chrome desktop notification
pnotify stack has to be persisted
webterm.alert
display uncaught exception in status bar
fix key focus after tab is switched
CleanSignature by default
make sure to clean signatures added by some smth client
clean AD
replace @prototype.xxx by @::xxx
simple benchmark utility
API to get current mode features
introduce screen.render_default so I can benchmark individually
fix editor listener
fix second auto recover
benchmark code for screen update and render
create menus on demand to improve screen rendering performance
export benchmark_scan
fix typo bug
Fix menu position in selection mode.
I'm not sure why I wrote div.find('span').width(), maybe it didn't work in some cases, but I couldn't figure out which cases... So let's just use div.width()...