Optimizing phone_words.py for memory/speed.

Small changes/removals have been made
to try to reduce the memory footprint for
phonewords. There is still 2 relatively
large lists being used in get_phonewords(),
which are also passed around a little.
Further investigation is needed.
asyncio may help with this, now that I am
using python 3.
Added wpsendmail for admins.
Optimizing phonewords a little, updated version.