Add new module for converting Zotero data to CSL

This could be its own module outside of the project, too.
Use `jedify` browserify transform for internationalization
Update zotero editing view

Takes advantage of browserify things now- also, template is rendered
client-side, not server-side. This will require updating the API to use
the /metadata/ endpoint, which I haven't created yet.
Prevent unnecessary memory use in citation generator

Makes the internal storage of the citation generator use a uniform key
for storing single pieces of data instead of a randomly generated one.