bulk investment menu now offers to "update price"

- this addition is a direct result of the adding of Unit Share funds,
which cannot be pulled from the yahoo finance API
- stocks/funds that don’t fetch prices from the API, will offer
(already be checked) to update the fund price based on the entry
- in practice, most times you are entering a new transaction, you’ll
want the “update price” checked
- the down-side is that any funds that don’t fetch real-time data will
be slightly off of the real market value, but this is the closest you
can maintain