Changed endpoints and db queries, chart now shows suggested mins and maxes

Database.go

@@ -71,7 +71,7 @@ func getSnapshotRecordsFromDb(minuteAgo int) ([]*SnapshotRecord, error) {
 	query := "SELECT `%s`, `%s`, `%s`, `%s`, `%s` FROM `snapshots` WHERE `%s` > date_sub(now(), interval %v minute) ORDER BY `id` DESC;"
 	rows, err := ClimateDb.Query(fmt.Sprintf(query, "id", "temp", "humidity", "co2", "time", "time", minuteAgo))
 	if err != nil {
-		return nil, err
+		return nil, fmt.Errorf("couldn't execute select query: %w", err)
 	}
 	for rows.Next() {
 		var snapshotRecord SnapshotRecord