Fixed the 'Sign Up' URL.
Support for additional species fields

In particular, a "family" field and a "other_part_of_name" field.

The other_part field contains any sort of text that the users want and
are used by the uploader to match species accordingly. For instance, if
someone wants to use a varietal or a sub-species this is the correct
place for it.
Use unicode escapes when processing species
Initial species error handling
"More Options" dialog for species fixing
Merge pull request #113 from shantanoo/patch-1

Fixed the 'Sign Up' URL.
Merge pull request #115 from ahinz/topic/species-fields

Support for additional species fields