Add Nikola.

[flexiondotorg]

This pull request add the static site generator, Nikola.

• https://gitnikola.com

This snap builds, but nikola fails to execute. See the include README.md for how to simply reproduce the error. Any help solving this is greatly appreciated :-)

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This change is

[dholbach]

Do you get something like this too? http://paste.ubuntu.com/17590013/

If yes, it's probably not ✅ yet. :-)

[dholbach]

Putting this on hold for now.

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Comments from Reviewable

[dholbach]

README.md, line 29 [r1] (raw file):

| :white_check_mark:  | `moon-buggy`       | [moon-buggy][moon-buggy]  |
| :white_check_mark:  | `mpv`              |                           |
| :white_check_mark:  | `nikola`           |                           |

Maybe change it here for now? And bring it up on the ML?

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Comments from Reviewable

[ralsina]

I merged an initial snap packaging in Nikola's repo a few days ago:

https://github.com/getnikola/nikola/tree/master/snapcraft

There are a few things that don't work (and probably never will) like nikola deploy or the -b option in nikola serve and nikola auto, but the basics are there.

[dplanella]

Closed as per Roberto's comment

[flexiondotorg]

I've spoken to @ralsina in IRC and will contribute to the upstream snap.