config/VirtualBox_VMs/vegbiendev/README.TXT: to test the import: database backup approach: added steps to enable the user to access VirtualBox shared folders

config/VirtualBox_VMs/vegbiendev/README.TXT: to test the import: added section for database backup approach, as alternative to clean database approach

fix: config/VirtualBox_VMs/vegbiendev/README.TXT: use ".." instead of - to indicate a range, to avoid this being confused for a minus sign

fix: config/VirtualBox_VMs/vegbiendev/README.TXT: updated for new metadata datasource names (see issue #940)

config/VirtualBox_VMs/vegbiendev/README.TXT: to test the import: set up the VM: added steps to create a VM snapshot when done

config/VirtualBox_VMs/vegbiendev/README.TXT: `make`: documented runtime (15 min)

fix: config/VirtualBox_VMs/vegbiendev/README.TXT: removed non-applicable step about the MySQL root password, which is not used for this procedure

added config/VirtualBox_VMs/vegbiendev/README.TXT with instructions to test the import

removed no longer used config/VirtualBox_VMs/VegCore ERD/. use the Ubuntu 14.04 VM instead, which now has the VegCore ERD setup.

config/VirtualBox_VMs/Ubuntu 14.04/Ubuntu 14.04.vbox: added VegCore ERD setup