update etc/isar-keywords.el

fix example files

generation of a code certificate from a respectfulness theorem for constants lifted by the quotient_definition command & setup_lifting command: setups Quotient infrastructure from a typedef theorem

simplified code of generation of aggregate relations

store the relational theorem for every relator

store the quotient theorem for every quotient

fix Quotient_Examples

respectfulness theorem has to be proved if a new constant is lifted by quotient_definition

adjusting to longer names in PNF_Narrowing_Engine, which was overlooked in 4106258260b3

merged;