[Lexicon] Add Query Links to Dioskoros and CDO

[remnqymi]

Both CDO and Dioskoros allow us to construct direct query URLS (e.g. ⲁⲃⲃⲁ, ⲁⲃⲃⲁ).

Since we don't have the most up-to-date data, our website could in the interim show hyperlinks that open the query URLs externally in the complementary dictionaries.

But once #305 is complete, the URLs should be removed. Our UI is already crowded!

[remnqymi]

Status:

TODO:

1. Move the buttons to the header, next to the mode buttons.

[remnqymi]

I am adding #640 as a blocker, because I don't want to promote the use of the header until the other dictionaries in the header are fully-featured.

#640 shouldn't be hard.