MT#4287 preserve display setting rows

in the local browser storage
the number of rows in a datatables element is saved
this is individually different for each page
MT#4287 Use Statesave Feature

This saves every configuration for datatables locally
And clear every localStorage setting on login/logout
MT#4287 Remove datatables state on menu items

That is, when changing the main pages (controller more or
less) like from /reseller to /contact, remove previous
stored state.