Replace tokens feature doesn't work with non-text characters in taxon name

[burkmarr]

Email from Andy Amphlett:

To make use of the #replaceable tokens# facility, which is very useful, I found that I had to remove all non-text characters = (equals) . (full stop) - (dash) ( ) (brackets) from Taxon names. These characters are used in lots of scientific names, eg. subsp., s.s., s.l., hybrid names eg. Drosera anglica x rotundifolia = D. x obovata, names with a hyphen eg. Asplenium adiantum-nigrum s.s., names that included brackets eg. Rosa caesia x rubiginosa (f x m). Now I know that, it's not really a problem, but if this step could be avoided that would be ideal, or add a bit of text to the instructions to explain.