Added tabs in property window

The property window uses now tabs.
Added options for counting backward in another colour
countring back properties are saved now

Properties that control countring back are now saved
Added two lines of dead code
fixed PausableTimer

fixed PausableTimer so that it does handles correctly after a pause
fixed to use TotalMilliseconds, so the correct pause time is used
Added no debug hint for compiler

so that PreFilterMessage does not show up while debugging
FiX: Invalid minute values cannot be set

added check so that minutes to blink cannot become smaller than the total
time
added countback+countback Timer + bugfixes

Added the countback feature, including a timer that counts upwards.
Fixed any observed bug, it should work properly now.