Dictionary search options.

[simjanos-dev]

• [ ] Add an option where the user can select which dictionaries they want to search for the hover vocabulary box on the admin page.
• [ ] Add an option where the user can select if they want to search lemma, the exact word or both for hover vocabulary box.
• [ ] Add an option where the user can select if they want to search lemma, the exact word or both for vocabulary box.
• [ ] Allow users to order dictionaries on the admin page, and display search result in the same order.