Refactor support for VDB customization scripts
Upon strartup, VDB now loads `~/.vdbinit.st`. If that file does not
exist, it loads default `vdbinit.st`. This default file also serves
as an example and documentation for available settings.
# automagically generated by the project definition
# this file is needed for stc to be able to compile modules independently.
# it provides information about a classes filename, category and especially namespace.
jv_vdb_application jv_vdb_application jv:vdb/application '* Projects & Packages *' 3