add .gitattributes and fix prettier/js warnings (#3094)

see title, as discussed in
https://github.com/MichMich/MagicMirror/pull/3093

js/translator.js

@@ -9,7 +9,6 @@
 const Translator = (function () {
 	/**
 	 * Load a JSON file via XHR.
-	 *
 	 * @param {string} file Path of the file we want to load.
 	 * @returns {Promise<object>} the translations in the specified file
 	 */
@@ -43,7 +42,6 @@ const Translator = (function () {
 
 		/**
 		 * Load a translation for a given key for a given module.
-		 *
 		 * @param {Module} module The module to load the translation for.
 		 * @param {string} key The key of the text to translate.
 		 * @param {object} variables The variables to use within the translation template (optional)
@@ -55,7 +53,6 @@ const Translator = (function () {
 			 * template: "Please wait for {timeToWait} before continuing with {work}."
 			 * variables: {timeToWait: "2 hours", work: "painting"}
 			 * to: "Please wait for 2 hours before continuing with painting."
-			 *
 			 * @param {string} template Text with placeholder
 			 * @param {object} variables Variables for the placeholder
 			 * @returns {string} the template filled with the variables
@@ -98,7 +95,6 @@ const Translator = (function () {
 
 		/**
 		 * Load a translation file (json) and remember the data.
-		 *
 		 * @param {Module} module The module to load the translation file for.
 		 * @param {string} file Path of the file we want to load.
 		 * @param {boolean} isFallback Flag to indicate fallback translations.
@@ -117,7 +113,6 @@ const Translator = (function () {
 
 		/**
 		 * Load the core translations.
-		 *
 		 * @param {string} lang The language identifier of the core language.
 		 */
 		loadCoreTranslations: async function (lang) {