Co-authored-by: Nallcontributors[bot] <46447321+allcontributors[bot]@users.noreply.github.com>

The changes are:

- Improve all-contributors config
- Fix typos
- Remove last mention of Java 8
- Better instructions for "building & running"

* docs: update README.md [skip ci]

* docs: update .all-contributorsrc [skip ci]
Co-authored-by: Nallcontributors[bot] <46447321+allcontributors[bot]@users.noreply.github.com>

* docs: update README.md [skip ci]

* docs: update .all-contributorsrc [skip ci]
Co-authored-by: Nallcontributors[bot] <46447321+allcontributors[bot]@users.noreply.github.com>

This commit also adds a new `maven` profile to keep the possibility of running
`maven` tasks without having to install `Node.js` locally`.

Documentation changes:

1. README.md

- Update requirements
- Simplify "Building & Running"
- Fix typos

2. CONTRIBUTING.md

- Update repository overview
- Update artificats creation
- Add section for Local frontend development
- Add FAQ
- Update requirements
- Fix typos

3. ui/README.md

- Coordinate changes on requirements with the rest of the documentation

Bower is deprecated and it is recommended to migrate to newer alternatives.

Gulp works well for small and straightforward projects but it becomes quickly
hard to maintain on a larger codebase. Also, Webpack modern features such as
tree shaking are very useful and allow us to save 1MB on CSS for example.

Overall, this makes the maintenance of the Console much easier. Everything is in
one place (`package.json`) with maximum flexibility:

- The current code just stays the way it is but already benefit from the new
framework (`import`, optional typescript/es7, etc.) - Any new code can be
written in TypeScript (with Babel) following latest standards with extensive
linting rules.

The README.md was updated too, I believe that the transition should be smooth +
the development experience was improved as a result of using webpack-dev-server.