First steps to bootstrap Angular app without Rails

Create basic express app that serves a static HTML page for
bootstrapping the Angular app and a minimal subset of API endpoints.

* Create Gulp tasks for starting express server, compiling Sass.

User Story # 16494

Signed-off-by: Alex Coles <alex@alexbcoles.com>
Remove usages of Prototype-added Array methods

Replace with equivalent lodash methods.

Signed-off-by: Alex Coles <alex@alexbcoles.com>