foundationmembers was a table specific to the GNOME Foundation. This new
table, election_voters, allows creation of an electorate based on a list.
README is updated to explain how to use this table.
It's clear from the PHP code that there should be an integer field called
'preference' in the election_votes table. I suspect that at some point there
was an ALTER TABLE done that wasn't reflected in the schema.sql file.
With this change, schema.sql can be run directly from the mysql command line,
with a command such as:
$ mysql -u root -p -D dbname < .../vote/include/schema.sql
