Move ws18 exercises to archive

psGrammar/archive/2018/challenge/pollen/sandbox.jsgf

psGrammar/archive/2018/challenge/pollen/setUpBill.jsgf

psGrammar/archive/2018/challenge/pollen/table.jsgf

psGrammar/archive/2018/challenge/team2/bill.jsgf

psGrammar/archive/2018/challenge/team2/order.jsgf

psGrammar/archive/2018/challenge/team2/table.jsgf

psGrammar/archive/2018/challenge/team2/task5.jsgf

psGrammar/archive/2018/exercises/cstollen/calculator.jsgf

psGrammar/archive/2018/exercises/cstollen/confirm.jsgf

.../archive/2018/exercises/cstollen/confirm_drivetodoor.jsgf

psGrammar/archive/2018/exercises/cstollen/goto.jsgf

psGrammar/archive/2018/exercises/cstollen/stop.jsgf

psGrammar/archive/2018/exercises/cstollen/telljoke.jsgf

psGrammar/archive/2018/exercises/cstollen/thanks.jsgf

psGrammar/archive/2018/exercises/dfinnerEx4.jsgf

...2018/exercises/jniermann/calculatorGrammar_jniermann.jsgf

...18/exercises/jniermann/followPersonGrammar_jniermann.jsgf

...r/archive/2018/exercises/jniermann/grammar_jniermann.jsgf

psGrammar/archive/2018/exercises/jschlueter_grammar.jsgf

psGrammar/archive/2018/exercises/mdialloEx4_grammar.jsgf