client wadl update and java, python3 and php src updates

src/application.wadl

src/java/uk/ac/cam/ucs/ibis/client/IbisClientConnection.java

src/java/uk/ac/cam/ucs/ibis/methods/GroupMethods.java

src/java/uk/ac/cam/ucs/ibis/methods/InstitutionMethods.java

src/java/uk/ac/cam/ucs/ibis/methods/PersonMethods.java

src/php/ibisclient/methods/GroupMethods.php

src/php/ibisclient/methods/InstitutionMethods.php

src/php/ibisclient/methods/PersonMethods.php

src/python3/ibisclient/methods.py