travis: Switch from raring to saucy

raring has been removed from the mirrors and was no longer supported
Merge pull request #1218 from rleigh-dundee/travis-saucy

travis: Switch from raring to saucy
Fix ZeissCZIReader to expand metadata to all channels
Fixes to FromatReader and CZI reader to remove trailing | from keys
Fix formatting
Catch all cases of a hashtable key ending in |
Fixed keyString at addMetaGlobalList
Fix FormatReader