Add prev/next arrows at the bottom of articles

[lazarljubenovic]

I'm submitting a...

[ ] Regression 
[ ] Bug report
[x] Feature request
[ ] Documentation issue or request (new chapter/page)
[ ] Support request => Please do not submit support request here, instead post your question on Stack Overflow.

Current behavior

When I finish reading an article from a group, it's a dead-end.

Expected behavior

I can just click "next" to keep reading related articles.

Minimal reproduction of the problem with instructions

Open any docs page.

What is the motivation / use case for changing the behavior?

It encourages me to continue reading and exploring. Currently I get the feeling "ok and?" as I finish reading. This is especially prominent in short pages. Would love seeing a link "Next: Usage" at the bottom.

For example, see Redux docs.

[navneetsharmaui]

@kamilmysliwiec It's been long since this feature was requested. When we are getting it out?
It would be very beneficial for readers.

[BrunnerLivio]

#549 will require to move the route configuration into the Dgeni compiler similar to angular.io. Once that is done, Dgeni will know which order the chapters have, therefore it can display the prev/next arrows.

tl;dr: #549 will enable this issue