Fixed numerous bugs after smoke-testing exomiser cron job on running server
Updated exomiser parsing to use .vcf suffix used by exomiser instead of .ezr suffix previously used.
Merged in changes from master branch
Removed unnecessary intro comment
Reverting to .ezr suffix and editing exomiser to avoid having to re-release patient-network module.
Fixed minor bug with exomiser cron crashing with deleted vcf files, and ensured that patient caches are cleared even if exomiser fails at some point
Fixed NPE from changes to Exomiser file format and added regression test
Fixed bug in cron script that caused it to also process non-VCF attachments