Multi lang docs

docs/_static/css/translation-hint.css

@@ -0,0 +1,16 @@
+#translation-closer {
+  float: right;
+}
+
+.translation-hint {
+  position: fixed;
+  z-index: 999;
+  bottom: 20px;
+  right: 20px;
+  background-color: #c9c9c9;
+  padding: 20px;
+}
+
+.translation-hint h1 {
+  font-size: 20px;
+}

docs/_static/js/translation-hint.js

@@ -0,0 +1,7 @@
+hideTranslationHint = function() {
+  document.getElementsByClassName("translation-hint")[0].style.display = "none"
+}
+
+window.onload = function() {
+  document.getElementById("translation-closer").addEventListener("click", hideTranslationHint);
+}