Update ESLint for Code Climate (#7696)

* Update babel-eslint to version 8.2.3

* Update eslint to version 4.19.1

* Update eslint-plugin-promise to version 3.8.0

* Update eslint-plugin-react to version 7.8.2

* Upgrade eslint-plugin-jsx-a11y to version 6.0.3

* yarn test:lint --fix

.eslintrc.yml

@@ -113,13 +113,23 @@ rules:
   jsx-a11y/accessible-emoji: warn
   jsx-a11y/alt-text: warn
   jsx-a11y/anchor-has-content: warn
+  jsx-a11y/anchor-is-valid:
+  - warn
+  - components:
+    - Link
+    - NavLink
+    specialLink:
+    - to
+    aspect:
+    - noHref
+    - invalidHref
+    - preferButton
   jsx-a11y/aria-activedescendant-has-tabindex: warn
   jsx-a11y/aria-props: warn
   jsx-a11y/aria-proptypes: warn
   jsx-a11y/aria-role: warn
   jsx-a11y/aria-unsupported-elements: warn
   jsx-a11y/heading-has-content: warn
-  jsx-a11y/href-no-hash: warn
   jsx-a11y/html-has-lang: warn
   jsx-a11y/iframe-has-title: warn
   jsx-a11y/img-redundant-alt: warn