Search box in puzzle info page for metas

[Torgen]

i.e. if there's no puzzle named x but there's a puzzle with answer X, X feeds into Y will do the right thing.

[Torgen]

Might be tricky because we store tags as whatever you enter, which is not likely to be exact for indexing purposes, and we can't teach mongodb our normalization algorithm.

[Torgen]

Box should search titles and answers.