This change makes it possible to run tests, integration tests and lint
on Travis CI. It also prepares a special Gulp task to perform the same
activities locally. This is handy when, e.g., sending a pull requrest.

Next change will actually implement some tests for the backend.

This setup autoreloads backend process on source change and ensures that
there is only one process running.

Follow up would be to wire this setup with browser sync to proxy API
calls to the backend.

This is to have unified codebase from the beginning of the project.

This commit changes all occurences of word "console" to "dashboard".

The rename was required due to collision with an other project.

The images can later be used to, e.g., deploy to a Kubernetes cluster.

Added a few simple rules to the linter and fixed all errors through the
codebase. This will allow to wire it up to some automatic checks.

This is to allow for calling, e.g., `# gulp backend`.

This is the main file that wires up all dependencies for Gulp. When it
is in the repository along with the other 2 pull requests,
`# gulp test` or `# gulp build` will work.

This file lists all path constants that'll be used in other build files,
e.g., to load or place appriopriate files.

No usage of this file just yet. Next commits will use it.