main app: add PS token
main app: add enclosure
pass saveAllData arguments to subtokens
token: support autosave

the inEvent argument of saveAllDate is now passed to saveData.
saveData checks inEvent and adds an 'autosave-' prefix if
inEvent=='autosave'
main app: autosave data before submitting the form
token: load autosave data at startup
token: add clear function, which clears all input
main app: add clear button