fix(code): More corrections for PHP's notices/fatal errors (refs #3108)
refactor(package): Add dynacase-offline-server-admin package (refs #4484)

The administration interface is now bundled by a distinct
`dynacase-offline-server-admin` package.
Merge pull request #60 from eguaj/2.0-A4484

refactor(package): Add dynacase-offline-server-admin package (closes #4484)