MultiWindow: Improvement and more

there some bugs show up after merge @2add61e9fdea (Floating window multitasking)

PS1: revert following @949706abd7c5 @6334e802e910
PS2: make floating window works together with floating window

Thanks Squadzone and OMNI

Signed-off-by: hany <hany.alsamman@gmail.com>
attempt to fix tile flip
add required class for quithours