Fix encoding and line endings

[EMTuckerLab]

$ file *.csv | grep standardize
acari-standardized.csv:        UTF-8 Unicode text, with very long lines
ixodes-standardized.csv:       UTF-8 Unicode text, with very long lines
phthiraptera-standardized.csv: ASCII text, with very long lines
siphonaptera-standardized.csv: UTF-8 Unicode text, with very long lines