Update Yahoo Calendar parameters from the current web client

Recovered the whole parameter table and the qm() parser from
bundle_epoch_calendar.js, then replayed every parameter against the live
event composer.

The table is exhaustive, so in_st, in_csz, in_ph, URL, invId, remadr and
msngr are documented as removed.

RPAT and DUR work again and are no longer marked deprecated. REND needs a
leading plus, a unix timestamp or a -Nt occurrence count, so the previously
documented bare YYYYMMDD form is wrong. TYPE is now a zero based index into
the event charm list, and the old numeric table is gone. inv_list only takes
plain email addresses. DESC no longer renders HTML. Added VIEW, recurId and
the casing rule for parameter names.

Also recorded that the trailing Z on ST and ET is not honoured, which is the
root cause behind issue #29.

Author: alies-dev