Transition campaign database to raw GFF files on disk.

- The campaign database has no tools for management and has an
  undocumented ancient file format.  Instead, transparently
  upgrade ACR_Persist campaign databases to a flattened raw GFF
  file store on disk (located at <home-directory>\DatabaseStore).

- Also, convert most projects to referencing various shared symbols
  from ALFA.Shared.dll instead of locally recompiling them.