eslint: add a few rules to rc file that are already respected

Author: etpinard

.eslintrc

@@ -35,20 +35,23 @@
     "space-in-parens": [2, "never"],
     "space-before-function-paren": [2, "never"],
     "space-before-blocks": [2],
+    "no-tabs": [2],
     "no-multi-spaces": [2],
     "no-whitespace-before-property": [2],
     "no-unexpected-multiline": [2],
     "no-floating-decimal": [2],
     "space-infix-ops": [2, {"int32Hint": true}],
     "quotes": [2, "single"],
     "dot-notation": [2],
+    "dot-location": [2, "property"],
     "operator-linebreak": [2, "after"],
     "eqeqeq": [2],
     "new-cap": [0],
     "no-redeclare": [2, {"builtinGlobals": true}],
     "no-shadow": [0, {"builtinGlobals": true}],
     "block-scoped-var": [2],
     "no-unused-vars": [2],
+    "no-undef-init": [2],
     "no-use-before-define": [2, "nofunc"],
     "no-loop-func": [2],
     "no-console": [0],