Add documentation only mode

[hossainemruz]

The current post section is good enough to act a standalone documentation site. We can add a site variable named mode which will accept portfolio (default) or documentation. For mode: documentation, we will not generate current portfolio style home page. Instead, the posts page will work as home page.

[hossainemruz]

Support doc versoning

[hossainemruz]

Home Page Layout:

Reading Page Layout:

[Kaligule]

Wouldn't this be similar to what #267 does, just more specific. Once !267 is implemented you could just go put this in your config and would be done:

enabledFeatures: ["documentation"]

That would also cut down the complexity arising with "modes". Modes seem like a hassle as they mean that sections would not stand for them selfs but would need to be aware of the current mode.

[hossainemruz]

@Kaligule Yes. This was just a preliminary idea.