[docs] [issue25910] Fixing links in documentation

[SilentGhost]

New submission from SilentGhost:

I've run 'make linkcheck' on Doc and it highlighted a number of faulty links in documentation. I've tried fixing some of them and here is the resulting patch. It's a bit too long and touches many files, so to summarise:

* Most changes are http->https redirect (many from wikipedia and microsoft, but some from independent project)
* New domains, sometimes without redirect or any indication of how to find the same information. 
* Completely new locations, only discoverable via search engine.
* Few dead links, that I removed.

I'm going to attach output.txt that is produced after running linkcheck with this patch applied, it is about three time smaller than the original one and has this types of issues:

* Dead links in licenses
* Internal redirects to versioned text
* Many python.org links in whatsnew/ that I don't know what to do about
* Spurious bad links

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assignee: docs at python
components: Documentation
files: linkcheck.diff
keywords: needs review, patch
messages: 256728
nosy: SilentGhost, docs at python, r.david.murray, zach.ware
priority: normal
severity: normal
stage: needs patch
status: open
title: Fixing links in documentation
versions: Python 3.5, Python 3.6
Added file: http://bugs.python.org/file41361/linkcheck.diff

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue25910>
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