Use lowercase for all element names and symbols

The matching algorithm will work better when all names are normalized.
For instance, a search of "iorn" will not list "iron" in the first
three matches, but a search of "Iorn" will have "iron" as the first
match.

makedb.ml

@@ -92,11 +92,12 @@ let makedb db json = let open Sqlite3
 	(* Bind each column name. In SQLite3 the leading ":" is part
 	of the named parameter. *)
 	in let prep i x =
-		(match colarr.(i) with
-		| "Symbol" -> symbs := (x,None)::!symbs
-		| "Name" -> names := (x,None)::!names
-		| _ -> ()
-		);
+		let lcase = String.lowercase_ascii
+		in let x = (match colarr.(i) with
+		| "Symbol" -> symbs := (lcase x,None)::!symbs; lcase x
+		| "Name" -> names := (lcase x,None)::!names; lcase x
+		| _ -> x
+		) in
 		binds stmt colarr.(i)
 		    (if x = "" then Data.NULL else Data.TEXT x)