Revert "[REMOVE] twitpic support is removed"
This reverts commit 936eba5.

And excluding the change for "options_backend.js".
So, default setting is changed to "pic.twitter.com".
[FIX] popup menu is not enable in expanded tweets
[FIX] broken list path
[FIX] enable tooltips without url expanding
[MODIFY] reduce URL expanding
[MODIFY] behavior for FOLLOWS_OVER_LIMIT message from user-stream
[FIX] Uncaught error occured when it recieves 420 response at connecting user-strem
[MODIFY] change webworker usage
[MODIFY] change decode method in tooltip
[MODIFY] change reconnecting for user-stream
[MODIFY] change to use https as constant url of twitter.com
Revert "[MODIFY] Need to detach window to upload images."

This reverts commit 95b601582b391aabaad5e4d8b753b40e69831868.
[MODIFY] hide a button for upload on Mac/Linux
[MODIFY] some changes about listsCache
Version 0.5.4.3