#319 fixing problem with update modified values

- problem was caused by updatable = false in @Column annotation
- also added the updated column to the import report
changing version number to 0.5.8
Changing version number to 0.5.9 to match HDX-CKAN release
Merge pull request #320 from OCHA-DAP/hotfix-update-values

PUll request: Hotfix update values
Merge pull request #321 from OCHA-DAP/dev

Pull request for merging dev into master for version 0.5.9