Lower nickname in Jeopardy cashout

Align with GetTarget() which is used in games to have consistent
handling of nicknames regardless of their casing.

Signed-off-by: Georg Pfuetzenreuter <mail@georg-pfuetzenreuter.net>

wat/integration.go

@@ -102,7 +102,7 @@ func (w *WatIntegration) Jeopardy(m *irc.Message, msgargs []string) {
 		// host   = we could use some WHO logic to find the host, but assuming nickname lookup to be sufficient here
 		// create = based on the above, maybe rather not create Watbot players based on only a nick?
 		//          but it expects someone to have played with Watbot before to be eligible for Jeopardy cashout ..
-		player := w.db.User(name, "", false)
+		player := w.db.User(strings.ToLower(name), "", false)
 		if player.Nick == "" {
 			fmt.Printf("Player %s does not exist in Watbot, skipping cashout.\n", name)
 			continue