Script Summary: Enhances http://stackoverflow.com, http://meta.stackoverflow.com, http://superuser.com, and http://serverfault.com.
Version: 1.3
* Adds sister-site navigation links to the header menus.
* Adds a "revisions" link to each question and answer.
* Highlights the voting controls of community wiki posts, (ie, no reputation).
* Adds "N" access key to Next buttons.
* Blocks ads (disabled by default).
Changes since 1.2.2
* Firefox 5+ compatibility
* added stackexchange.com
