Click the checksum details page bug "Unknown checksum: ……"

Because checksum is character format when  the version of pt-query-digest greater than 3.0.11 , however the anemometer will display the checksum into hexadecimal in the result page, click checksum enter to the details page, then convert the checksum from hexadecimal to decimal, it's unfriendly to string-based checksum.So I try to not convert the checksum, successfully solved this problem.

