chore(*): switch from JSHint/JSCS to ESLint (+ other build-related changes)

.eslintignore

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+bower_components/**
+build/**
+docs/bower_components/**
+docs/app/assets/js/angular-bootstrap/**
+docs/config/templates/**
+node_modules/**
+lib/htmlparser/**
+src/angular.bind.js
+src/ngParseExt/ucd.js
+i18n/closure/**
+tmp/**

.eslintrc-base.json

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+{
+  "rules": {
+    // Rules are divided into sections from http://eslint.org/docs/rules/
+
+    // Possible errors
+    "comma-dangle": ["error", "never"],
+    "no-cond-assign": ["error", "except-parens"],
+    "no-constant-condition": ["error", {"checkLoops": false}],
+    "no-control-regex": "error",
+    "no-debugger": "error",
+    "no-dupe-args": "error",
+    "no-dupe-keys": "error",
+    "no-duplicate-case": "error",
+    "no-empty-character-class": "error",
+    "no-empty": "error",
+    "no-ex-assign": "error",
+    "no-extra-boolean-cast": "error",
+    "no-extra-semi": "error",
+    "no-func-assign": "error",
+    "no-inner-declarations": "error",
+    "no-invalid-regexp": "error",
+    "no-irregular-whitespace": "error",
+    "no-negated-in-lhs": "error",
+    "no-obj-calls": "error",
+    "no-regex-spaces": "error",
+    "no-sparse-arrays": "error",
+    "no-unreachable": "error",
+    "use-isnan": "error",
+    "no-unsafe-finally": "error",
+    "valid-typeof": "error",
+    "no-unexpected-multiline": "error",
+
+    // Best practices
+    "accessor-pairs": "error",
+    "array-callback-return": "error",
+    "eqeqeq": ["error", "allow-null"],
+    "no-alert": "error",
+    "no-caller": "error",
+    "no-case-declarations": "error",
+    "no-eval": "error",
+    "no-extend-native": "error",
+    "no-extra-bind": "error",
+    "no-extra-label": "error",
+    "no-fallthrough": "error",
+    "no-floating-decimal": "error",
+    "no-implied-eval": "error",
+    "no-invalid-this": "error",
+    "no-iterator": "error",
+    "no-multi-str": "error",
+    "no-new-func": "error",
+    "no-new-wrappers": "error",
+    "no-new": "error",
+    "no-octal-escape": "error",
+    "no-octal": "error",
+    "no-proto": "error",
+    "no-redeclare": "error",
+    "no-return-assign": "error",
+    "no-script-url": "error",
+    "no-self-assign": "error",
+    "no-self-compare": "error",
+    "no-sequences": "error",
+    "no-throw-literal": "error",
+    "no-unmodified-loop-condition": "error",
+    "no-unused-expressions": "error",
+    "no-unused-labels": "error",
+    "no-useless-call": "error",
+    "no-useless-concat": "error",
+    "no-useless-escape": "error",
+    "no-void": "error",
+    "no-with": "error",
+    "radix": "error",
+    "wrap-iife": ["error", "inside"],
+
+    // Strict mode
+    "strict": ["error", "global"],
+
+    // Variables
+    "no-delete-var": "error",
+    "no-label-var": "error",
+    "no-restricted-globals": ["error", "event"],
+    "no-shadow-restricted-names": "error",
+    "no-undef-init": "error",
+    "no-undef": "error",
+    "no-unused-vars": ["error", { "vars": "local", "args": "none" }],
+
+    // Node.js
+    "handle-callback-err": "error",
+
+    // Stylistic issues
+    "array-bracket-spacing": ["error", "never"],
+    "brace-style": ["error", "1tbs", { "allowSingleLine": true }],
+    "comma-style": ["error", "last"],
+    "eol-last": "error",
+    "keyword-spacing": "error",
+    "linebreak-style": ["error", "unix"],
+    "max-len": ["error", { "code": 200, "ignoreComments": true, "ignoreUrls": true }],
+    "new-cap": "error",
+    "new-parens": "error",
+    "no-array-constructor": "error",
+    "no-bitwise": "error",
+    "no-mixed-spaces-and-tabs": "error",
+    "no-multiple-empty-lines": ["error", { "max": 3, "maxEOF": 1 }],
+    "no-whitespace-before-property": "error",
+    "no-spaced-func": "error",
+    "no-trailing-spaces": "error",
+    "no-unneeded-ternary": "error",
+    "semi-spacing": "error",
+    "semi": "error",
+    "space-before-blocks": ["error", "always"],
+    "space-before-function-paren": ["error", "never"],
+    "space-in-parens": ["error", "never"],
+    "space-infix-ops": "error",
+    "space-unary-ops": ["error", { "words": true, "nonwords": false }],
+    "unicode-bom": ["error", "never"]
+  }
+}

.eslintrc-browser.json

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+{
+  "extends": "./.eslintrc-base.json",
+
+  "env": {
+    // Note: don't set `"browser": true`; code in "src/" should be compatible with
+    // non-browser environments like Node.js with a custom window implementation
+    // like jsdom. All browser globals should be taken from window.
+    "browser": false,
+    "node": false
+  },
+
+  "globals": {
+    "window": false,
+
+    "angular": false
+  }
+}

.eslintrc-node.json

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+{
+  "extends": "./.eslintrc-base.json",
+
+  "env": {
+    "browser": false,
+    "node": true
+  }
+}

.eslintrc-todo.json

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+{
+  // This config contains proposed rules that we'd like to have enabled but haven't
+  // converted the code to adhere yet. If a decision comes to not enable one of these
+  // rules, it should be removed from the file. Every rule that got enabled in the
+  // end should be moved from here to a respective section in .eslintrc.json
+
+  "rules": {
+    // Rules are divided into sections from http://eslint.org/docs/rules/
+
+    // Best practices
+    "complexity": ["error", 10],
+    "dot-notation": "error",
+    "dot-location": ["error", "property"],
+
+    // Stylistic issues
+    "block-spacing": ["error", "always"],
+    "comma-spacing": "error",
+    "id-blacklist": ["error", "event"],
+    "indent": ["error", 2],
+    "key-spacing": ["error", { "beforeColon": false, "afterColon": true, "mode": "minimum" }],
+    "object-curly-spacing": ["error", "never"],
+    "object-property-newline": ["error", { "allowMultiplePropertiesPerLine": true }],
+    "operator-linebreak": ["error", "after", { "overrides": { "?": "before", ":": "before" }}],
+    "quotes": ["error", "single"]
+  }
+}

.eslintrc.json

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+{
+  "root": true,
+  "extends": "./.eslintrc-node.json"
+}

.nvmrc

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+4
+