Update ESLint and fix config

Change-Id: I53da439c547b1931140a407a71284643aa7f5d49

.eslintignore

@@ -0,0 +1,7 @@
+/vendor/
+/docs/
+
+# Language files written automatically by TranslateWiki
+/**/i18n/**/*.json
+!/**/i18n/**/en.json
+!/**/i18n/**/qqq.json

.svgo.config.js

@@ -4,6 +4,7 @@
  * Recommended options from:
  * https://www.mediawiki.org/wiki/Manual:Coding_conventions/SVG#Exemplified_safe_configuration
  */
+'use strict';
 
 module.exports = {
 	plugins: [
@@ -38,4 +39,4 @@ module.exports = {
 		pretty: true
 	},
 	multipass: true
-}
+};

Gruntfile.js

@@ -19,10 +19,7 @@ module.exports = function ( grunt ) {
 				cache: true,
 				fix: grunt.option( 'fix' )
 			},
-			all: [
-				'**/*.{js,json}',
-				'!{vendor,node_modules,docs}/**'
-			]
+			all: [ '.' ]
 		},
 		banana: conf.MessagesDirs,
 		watch: {

package.json

@@ -6,7 +6,7 @@
 		"test": "grunt test"
 	},
 	"devDependencies": {
-		"eslint-config-wikimedia": "0.25.1",
+		"eslint-config-wikimedia": "0.26.0",
 		"grunt": "1.6.1",
 		"grunt-banana-checker": "0.11.1",
 		"grunt-contrib-watch": "1.1.0",

tests/qunit/.eslintrc.json

@@ -1,4 +1,5 @@
 {
+	"root": true,
 	"extends": [
 		"../../modules/.eslintrc.json",
 		"wikimedia/qunit"