Correctly detect fullscreen mode in Firefox <= 3.6
(related to #4 and #5)
Hide sidebar splitter, if active fullscreen web application
(#4)
Add separate preference for splitter width in fullscreen window (F11)
(#5)
Add UI for splitterWidthFullScreen preference
(#5)
Add changelog: #1, #2, #3, #4, #5 + all recent changes