Implement easy/advanced mode for menu

Implement the mecanism of easy/advanced mode menu/submenu/action using
same function as for filtering, because pages 1-2 and printing time do
not use this filter they are not affected yet -will be done later
setting is in Configuration->Mode
Setting is saved at each modification, during menu creation just need to
add a parameter to link to menu : Only easy mode (EASY_MODE), only
advanced mode (ADVANCED_MODE) , easy mode and advanced mode (ALL_MODE
which is a define of EASY_MODE|ADVANCED_MODE)  and menu/submenu/entry
can also be always (NOT_SHOW_MODE)
using this additionnal mode can easily be added by defining a new mode
mask and apply to targeted menu/submenu/entry