add isControlKey to functio_lib

isControlKey(key,type) checked existense of key in array control key
specific type.
change control getting to new system

Fixed gameover.lua & title.lua for new control function isControlKey
Sample of use:
if isControlKey(key,'up') then
...
end
fix activatation buttons

Change "not isrepeat" to "isrepeat". Buttons no more hav (has?) extra
activation.
unbroken previous broken

Return not isrepeat
tiny fix change defaul select button to (1)
Merge pull request #18 from niksaak/easy-control

isControlKey() (a.k.a. easy-controls)