add a sanity check for the tika resources
add a sanity check for the tika resources

tika reads the 'META-INF/services/org.apache.tika.parser.Parser'
resource and uses that to initialize the available parsers.

org.gagravarr/vorbis-java-tika is a dependency of tika and ships with
it's own version of the above file, but it does only list 3
vorbis-java-tika parsers.

lein uberjar chooses to use the resource file from vorbis-java-tika

we must make sure that we do not use the file shipped by
vorbis-java-tika, since then parsing only works for ogg files

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