Use userid rather than username

app/peppy/user_x.go

@@ -39,7 +39,7 @@ func getUserX(c *gin.Context, db *sql.DB, orderBy string, limit int) {
 			scores.pp, scores.accuracy
 		FROM scores
 		LEFT JOIN beatmaps ON beatmaps.beatmap_md5 = scores.beatmap_md5
-		LEFT JOIN users ON scores.username = users.username
+		LEFT JOIN users ON scores.userid = users.id
 		WHERE %s AND scores.play_mode = ?
 		%s
 		LIMIT %d`, whereClause, orderBy, limit,

app/v1/user_scores.go

@@ -53,7 +53,7 @@ SELECT
 	beatmaps.ranked_status_freezed, beatmaps.latest_update
 FROM scores
 LEFT JOIN beatmaps ON beatmaps.beatmap_md5 = scores.beatmap_md5
-LEFT JOIN users ON users.username = scores.username
+LEFT JOIN users ON users.id = scores.userid
 `
 
 // UserScoresBestGET retrieves the best scores of an user, sorted by PP if