Rename to getFacilitiesNotLeaves

Rename getFacilitiesNonOrpaned to getFacilitiesNotLeaves
Adds about page. Sports are in 2 instead of 3 columns on activities side
Refactoring getClubsBySportsDaysTimePrice

Days array - the value 8 is not treated in a special way
Instead all the code regarding clubosport is in foreach $days
There is new flag days_selected indicating whether the days array was empty

query.php: When the argument $days contains all days, it becomes empty array.
filterDays gets called here instead of in getClubsBySportsDaysTimePrice.