Updates bccvl_buildout version
Adds instructions on how to pull the latest version of all the submodules
Merge branch 'add_salt_files_for_visualiser' of github.com:BCCVL/BCCVL_Test_Environment into add_salt_files_for_visualiser
Increases memory allocated to plone VM to 2GB. Changes salt to use verbose logging
Adds a salt state file for the visualiser's package requirements. Adds filters to include only the bccvl salt states appropriate for the specific plone/visualiser instance.
Adds instructions on how to start Plone to the README
Updates the instructions regarding restarting the Plone VM
Updates the URL with the correct IP for the plone VM