Update expected visualiser structure

updates paths used for visualiser, as this no longer has a core directory
replaces a reference to Uma::User to what is now just User
as visualiser now uses a different database for production and development, adds actions when setting visualiser to development mode to create and migrate (if needed) the development database
this is required as using the same database for development as for production leads to issues with the credentials/encryption keys (e.g. in the past when using vagrant, the process for building dev1 generates the required creds, but these are then unavailable when moving to dev, which uses the creds stored on your local machine)

openflighthpc / concertim-ansible-playbook