Upgrade ESlint to v1.7.3

Enable new rules:
* no-empty-pattern
* no-magic-numbers (exempting 0 and ±1)

Refs #19908

[skip sauce]
[skip validator]

js/.eslintrc

@@ -21,6 +21,7 @@
         "no-duplicate-case": 2,
         "no-empty": 2,
         "no-empty-character-class": 2,
+        "no-empty-pattern": 2,
         "no-ex-assign": 2,
         "no-extra-boolean-cast": 2,
         "no-extra-parens": 0,
@@ -29,6 +30,7 @@
         "no-inner-declarations": 2,
         "no-invalid-regexp": 2,
         "no-irregular-whitespace": 2,
+        "no-magic-numbers": [2, {"ignore": [-1, 0, 1]}],
         "no-negated-in-lhs": 2,
         "no-obj-calls": 2,
         "no-regex-spaces": 2,

package.json

@@ -38,7 +38,7 @@
   "devDependencies": {
     "autoprefixer": "^6.0.3",
     "babel-eslint": "^4.1.3",
-    "eslint": "^1.5.1",
+    "eslint": "^1.7.3",
     "grunt": "^0.4.5",
     "grunt-babel": "^5.0.3",
     "grunt-build-control": "^0.6.0",