Add initial Vagrant/Saltstack setup

This commit adds an initial Vagrant and Saltstack setup that reuses the
same configuration as that of the gva repository. The LDAP server itself
is not configured yet.

salt/roots/gnuviechadmin/bash_functions

@@ -0,0 +1,25 @@
+#!/bin/bash
+
+function devenv
+{
+    . $HOME/gvasettings.sh
+    . $HOME/gva-venv/bin/activate
+    cd /vagrant/gnuviechadmin
+}
+
+function testenv
+{
+    devenv
+    export DJANGO_SETTINGS_MODULE=${DJANGO_SETTINGS_MODULE%%.local}.test
+}
+
+function settitle
+{
+    if [ -n "$STY" ] ; then      # We are in a screen session
+        echo "Setting screen titles to $@"
+        printf "\033k%s\033\\" "$@"
+        screen -X eval "at \\# title $@" "shelltitle $@"
+    else
+        printf "\033]0;%s\007" "$@"
+    fi
+}