Simplify registering unit types to PagedButtonsConfig

[tdauth]

Add functions:

function SetDefaultHeroCosts takes integer gold, integer lumber returns nothing
function AddHeroCosts takes integer unitTypeId, integer gold, integer lumber returns nothing
function SetDefaultStockValues takes integer stockInitialAfterStartDelay, integer stockMaximum, integer stockReplenishInterval, integer stockStartDelay returns nothing
function AddStockValues takes integer unitTypeId, integer stockInitialAfterStartDelay, integer stockMaximum, integer stockReplenishInterval, integer stockStartDelay returns nothing

[tdauth]

Done.