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

config/VirtualBox_VMs/vegbiendev/vegbiendev.vbox: updated: merged post-bootloader installation steps into one snapshot now that eth1 addition is successful

config/VirtualBox_VMs/vegbiendev/vegbiendev.vbox: updated, which adds eth1

config/VirtualBox_VMs/Ubuntu 12.04/Ubuntu 12.04.vbox: updated