Local (#94)

* add i18next package for localisation

* progress

* update dep and fix 2 bugs

* remove report as this seems to hang ci

* Update package.json

* add package to kill server when tests end

src/editor/locale/lang.be.js

@@ -205,7 +205,7 @@ export default {
     enterNewImgURL: 'Enter the new image URL',
     defsFailOnSave: 'NOTE: Due to a bug in your browser, this image may appear wrong (missing gradients or elements). It will however appear correct once actually saved.',
     loadingImage: 'Loading image, please wait...',
-    saveFromBrowser: "Select 'Save As...' in your browser (possibly via file menu or right-click context-menu) to save this image as a %s file.",
+    saveFromBrowser: "Select 'Save As...' in your browser (possibly via file menu or right-click context-menu) to save this image as a {{type}} file.",
     noteTheseIssues: 'Also note the following issues: ',
     unsavedChanges: 'There are unsaved changes.',
     enterNewLinkURL: 'Enter the new hyperlink URL',