Allow password loading form env, add ./checksum

checksum

+#!/bin/bash
+git rev-parse HEAD
+cd content
+git rev-parse HEAD
+cd ../theme
+git rev-parse HEAD
+cd ../static
+git rev-parse HEAD

upload

-echo -n "Heslo pro upload: "
-read -s LFTP_PASSWORD; export LFTP_PASSWORD
+echo "UPLOADER 1.0"
+if [ -z "$LFTP_PASSWORD" ]
+then
+	echo -n "Heslo pro upload: "
+	read -s LFTP_PASSWORD; export LFTP_PASSWORD
+fi
 
 rm -rf public/*
 node index.js compileonly # add "final" when deploying to ok1kvk.cz