JSON data files from josquin server have bad character, causing load error

[broadwell]

An errant control character seems to have found its way to the front of the "filename" value in every work data file that we've tried to load in the interface, e.g.,
https://josquin.stanford.edu/cgi-bin/jrp?a=proll-json&f=Jos2721
It appears as a ^D (CTRL-D ?) when viewed in vim, for what that's worth.

[broadwell]

@craigsapp beat me to it - #190.