Ability to search via game description text

[ElfEars]

Currently the search system is pretty good however one key missing feature is the ability to search for text found in game descriptions.

I'm thinking that a substring search for the entered text would be the most helpful but obviously this is a bit intensive. I'm not sure whether like %searchterm% or instr is faster for this kind of searching (Although I see you currently use like for search purposes)

(BTW, you can currently use % in regular title/author searches. It's EXTREMELY useful but I'm not sure whether this is an intended feature. Might be worth adding to the FAQ)

Interested on any feedback for this request.

[Difegue]

I don't think description searches would be more intensive than the current name/creator searches if the matching indexes are added on the SQLite side.
(I'm no SQL guru so if there's something more efficient than LIKE I'm all ears)
UI-wise it'd be pretty easy to add a textbox for description searching as well.

If I get a PR for this I don't mind reviewing and adding it, but right now I'm not working on DoujinSoft and would probably prioritize adding a .mio upload/administration system before getting to this.

As for the %s, I wasn't aware of it but it's likely a side effect of Java's PreparedStatements. Shouldn't cause any harm.