New mail fixes

First commit fixes a typo.
Second commit makes it so that the page isn't orangered if reddit wouldn't otherwise display it that way (like RES does--just less logic). Orangered is set according to its status on page load, then on subsequent checks it's adjusted if the new unread message count is greater or less than previous checks. The count always displays in the toolbox toolbar, but only in the reddit header bar if it's orangered (like default).