Merge pull request #41 from spring-petclinic/dependabot/npm_and_yarn/…

…client/loader-utils-and-babel-loader-and-css-loader-and-extract-text-webpack-plugin-and-file-loader-and-less-loader-and-ts-loader-and-tslint-loader-and-webpack-1.4.2

Bump loader-utils, babel-loader, css-loader, extract-text-webpack-plugin, file-loader, less-loader, ts-loader, tslint-loader and webpack in /client