Timvde
commented
6 years ago I couldn't test this, because I couldn't find how not to make the reload icons the last ones already. Since the code looks reasonable and your work has been pretty good in general, I'll take it as it is. Thanks!
Forces the reload button icon by extension https://addons.mozilla.org/en-US/firefox/addon/reload-in-address-bar/ to always appear at the end of extension icons, because sometimes installing new PageAction extensions or just toggling their appearance can make other icons shift position.