Remove server-side filtering by ada/unisex

We're doing this filtering in Javascript on the frontend, so there's no reason to have the controller code or model scopes that support it.
Fix copy-paste error
Merge pull request #75 from eleather/master

Tidy unused server-side filtering; Fix copy-paste errors
Fixed thumbs up and thumbs down styling.
Adding my latest CSS work before presentation. Seeing that we need to move css values to percentages and ems to be responsive. I did some of this but still a lot to do.
Merge branch 'master' of github.com:lisafrench/refugerestrooms