Adopt openstack-config for eslint

Since openstack-config for eslint is now published on npm we should use
it as basis for our linting rules. It is actually stricter, than our
current semi-default config as it enables some of the previously
unchecked rules.

Partially implements: blueprint add-js-lint-jobs

Change-Id: I0cb8247167a44f30a657693442f99a87f116350a

.eslintrc

@@ -1,30 +1,13 @@
 # For a detailed list of all options please see here:
 # http://eslint.org/docs/configuring/
 
+extends: openstack
+
 env:
 # Use jquery global variables
   jquery: true
   browser: true
 
-rules:
-  # Specify whether backticks, double or single quotes should be used
-  # http://eslint.org/docs/rules/quotes
-  quotes:
-    - 0 # TODO(kzaitsev): Activate & Fix
-    - 'single'
-
-  # Require camel case names
-  # http://eslint.org/docs/rules/camelcase
-  camelcase:
-   - 1
-   - properties: "never"
-
-  # This option sets a specific tab width for your code
-  # http://eslint.org/docs/rules/indent
-  indent:
-    - 2 # Mark as errors.
-    - 2 # NOTE(kzaitsev): horizon also uses 2 space indentation.
-
 globals:
   # allow accessing horizon
   horizon: false

package.json

@@ -6,7 +6,8 @@
   "repository": "none",
   "license": "Apache 2.0",
   "devDependencies": {
-    "eslint": "^0.23.0"
+    "eslint": "^0.23.0",
+    "eslint-config-openstack": "1.2.0"
   },
   "scripts": {
     "lint": "eslint --no-color muranodashboard/static"