Configured Gatsby Lodash plugin

To prevent UI freezes/frame drops when users typing in the input field
while the grid reacts to the changes immediately a debounce might be
used. It can wait some milliseconds before actually filtering the grid
by the given search term. To get the best performance Lodash (1) can be
used through "gatsby-plugin-lodash" (2) which sets up
"babel-plugin-lodash" (3) and "lodash-webpack-plugin" (4).

References:
  (1) https://lodash.com
  (2) https://github.com/gatsbyjs/gatsby/tree/master/packages/gatsby-plugin-lodash
  (3) https://github.com/lodash/babel-plugin-lodash
  (4) https://github.com/lodash/lodash-webpack-plugin

GH-119

Author: arcticicestudio

gatsby-config.js

@@ -56,6 +56,7 @@ module.exports = {
     "gatsby-plugin-svgr",
     "gatsby-plugin-sitemap",
     "gatsby-plugin-webpack-size",
+    "gatsby-plugin-lodash",
     {
       resolve: "gatsby-plugin-canonical-urls",
       options: {