Merge branch '4.0-dev' into installation

Author: brianteeman

.babelrc

@@ -0,0 +1,15 @@
+{
+  "presets": [
+    [
+      "env",
+      {
+        "modules": false,
+        "targets": {
+          "browsers": [
+            "last 1 version"
+          ]
+        }
+      }
+    ]
+  ]
+}

.eslintignore

@@ -1 +1,4 @@
 # A list of files to ignore from linting
+*.js
+!*.es6.js
+!build/**/*.js

.eslintrc

@@ -12,5 +12,12 @@
   // Additional global variables your script accesses during execution
   "globals": {
     "Joomla": true
+  },
+  // Rule overrides
+  "rules": {
+    // Allow usage of dev-dependencies in js files in build directory
+    "import/no-extraneous-dependencies": ["error", {"devDependencies": ["build/**/*.js"]}],
+    // Allow strict mode (we are not dealing with modules)
+    "strict": [0]
   }
 }