Updated FileStagingService to support file renaming
Added file exists check
Fixed renaming a file into itself edge case
Added stage in directory test
Added another missing neptune image for extjs
Merge pull request #13 from joshvote/fss-upgrade

Upgrades to FileStorageService
AUS-2553: Link auscope portal to VGL
Merge branch 'master' of https://github.com/AuScope/portal-core