[Issue] Change API param for type to @type

[UcDust]

We're adding works to the search page. We need a way to filter works by type, like 'journal', 'conference paper', etc.

Currently type is used to filter results to @type results, like Expert, Grant, etc. We should change the current type param to be @type so it matches the data more closely, and allows us to filter by citation type where needed. Probably will need to url encode this.

Might need to use this branch.