Merge pull request #138 from binyuj/retry

retry when APPID over quota
add support for box.com
Merge pull request #139 from wwqgtxx/patch-16

add support for box.com
add support for copy.com
Merge pull request #140 from wwqgtxx/patch-17

add support for copy.com
proxy.pac
add set_windows_proxy
add windows proxy menu
add disable proxy submenu item
add checked icon
bugfix for goagent.exe
bugfix for goagent.exe
bugfix for goagent.exe
merge adblock-chinalist rule
add more hosts
bump version to 3.0.3
fix PACserver