Suggester can take a blacklist
Don't make suggestions of words in blacklist

It isn't appropriate for GOV.UK to suggest "penis on" for "penison", and it is
more helpful for it to actually suggest "pension", so let's do that.
Add a blacklist regression test
Refactor reading config files
Add some extra words and acronyms

These were generating unhelpful suggestions and are often terms which return
useful results.
Merge pull request #115 from alphagov/dont_suggest_words_in_a_blacklist

Dont suggest words in a blacklist