#1916 Migrating .rvl files to different machines with database connection fails

[High Performance Coder]

If the sqlite database file is not where the .rvl says it is, then the model doesn't even open up properly. At minimum, the full analysis graph should display, better is if the database file is located in the CWD (ie in the same directory as the .rvl file), then the file location should be rewritten.