Enforce several additional style rules

.eslintrc

@@ -21,6 +21,7 @@
     "eqeqeq": "error",
     "guard-for-in": "error",
     "indent": ["error", 2],
+    "new-cap": "error",
     "no-caller": "error",
     "no-case-declarations": "error",
     "no-console": [
@@ -29,15 +30,19 @@
     ],
     "no-extra-bind": "error",
     "no-lone-blocks": "error",
+    "no-lonely-if": "error",
+    "no-multiple-empty-lines": "error",
     "no-self-compare": "error",
     "no-throw-literal": "error",
     "no-undef-init": "error",
+    "no-unneeded-ternary": "error",
     "no-unused-expressions": "error",
     "no-use-before-define": [
       "error",
       {"functions": false},
     ],
     "no-useless-concat": "error",
+    "one-var-declaration-per-line": ["error", "always"],
     "semi": "error",
     "strict": ["error", "safe"],
   },

h/static/scripts/directive/login-form.js

@@ -19,7 +19,8 @@ function Controller($scope, $timeout, flash, session, formRespond, settings) {
   }
 
   function failure(form, response) {
-    var errors, reason;
+    var errors;
+    var reason;
 
     try {
       errors = response.data.errors;