S allius/issue385 (#386)

* ignore translation and log files

* add quart-babel

* build and install translation files

* don't export the web-ui port 8127

- for security reason the user should use the
  HA ingress and not the direkt access to the web
  dashboard

* set 'lang' in html tag

app/src/.babel.cfg

@@ -0,0 +1,2 @@
+[python: **.py]
+[jinja2: web/templates/**.html]