Added scripts to initialize a new language and compile existing .po files

compile-messages.sh

+source ./translation.vars
+
+TZ=UTC env/bin/pybabel compile -d $TRANSDIR

init-new-po.sh

+source ./translation.vars
+
+if [ $# -ge 1 ]
+then
+    TZ=UTC env/bin/pybabel init -i $POTFILE -d $TRANSDIR -l $1
+else
+    echo "Usage: ./init-new-po.sh lang"
+fi