Install eslint

Add basic eslint config, based on recommended options and disabling the most "shitty" warnings in current codebase
Dependencies list is sorted by npm
Npm asks me to commit new package-lock.json file

.eslintrc.yml

@@ -0,0 +1,21 @@
+---
+
+parserOptions:
+  ecmaVersion: 8
+  sourceType: module
+
+env:
+  browser: true
+  node: true
+
+plugins:
+  - vue
+
+extends:
+  - eslint:recommended
+  - plugin:vue/recommended
+
+rules:
+  no-unused-vars: 'off'
+  no-console: 'off'
+  no-empty: 'off'

package.json

@@ -16,35 +16,37 @@
   },
   "private": false,
   "devDependencies": {
-    "webpack": "^3.10.0",
     "babel-core": "^6.26.0",
+    "babel-loader": "^7.1.2",
+    "babel-preset-env": "^1.6.1",
     "babel-preset-es2015": "^6.24.1",
     "babel-preset-react": "^6.24.1",
-    "babel-preset-env": "^1.6.1",
-    "babel-loader": "^7.1.2",
-    "jquery": "^3.2.1",
-    "vue": "^2.5.13",
-    "vue-loader": "^13.7.0",
-    "vue-template-compiler": "^2.5.13",
+    "codemirror": "^5.23.0",
     "css-loader": "^0.28.9",
-    "sass-loader": "^6.0.6",
-    "node-sass": "^4.7.2",
     "electron": "^1.7.10",
+    "eslint": "^4.16.0",
+    "eslint-plugin-vue": "^4.2.0",
     "gulp": "^3.9.1",
     "gulp-babel": "^7.0.0",
-    "pump": "^2.0.0",
     "gulp-plumber": "^1.2.0",
     "gulp-watch": "^5.0.0",
-    "codemirror": "^5.23.0",
+    "jquery": "^3.2.1",
+    "node-sass": "^4.7.2",
+    "pump": "^2.0.0",
+    "sass-loader": "^6.0.6",
+    "v-tooltip": "^2.0.0-rc.30",
+    "vue": "^2.5.13",
     "vue-codemirror": "^4.0.3",
+    "vue-loader": "^13.7.0",
     "vue-material-design-icons": "^1.0.0",
-    "v-tooltip": "^2.0.0-rc.30"
-
+    "vue-template-compiler": "^2.5.13",
+    "webpack": "^3.10.0"
   },
   "scripts": {
     "build": "npm run build --prefix client && npm run build --prefix core && npm run build --prefix csseditor",
     "watch_client": "npm run watch --prefix client",
     "watch_core": "npm run watch --prefix core",
-    "test": "npm run build"
+    "lint": "eslint -f unix client/src core/src csseditor/src",
+    "test": "npm run build && npm run lint"
   }
 }