Update this codebase to not have the DB file committed

[Shazwazza]

It is quite annoying having all of the data committed to this project and causes problems when trying to fix and merge.

We need to update the project to:

• be an empty MVC project with the correct Nuget references
• update the docs on how to force the re-install of the umbraco nuget packages when first cloning the repo
• update the docs on how to install the starter kit package when first cloning the repo
• remove and ignore all data files

This means there will be no odd merge conflicts when the community is working on this project and we don't have to have all of this committed to the repo.