SeqFindr-web compatibility and support for other fasta formats.

[jling90]

[landscape-bot]

Repository health decreased by 14% when pulling bcc5e80 on jling90:master into e24dab9 on mscook:master.

• 61 new problems were found (including 9 errors and 18 code smells).
• 4 problems were fixed (including 0 errors and 1 code smell).