Add rule for Sakha

See https://bugzilla.mozilla.org/show_bug.cgi?id=846817
Fix links from LISA to GALA
Use docs.translatehouse.org
Add virtaal for cross-reference
Fix literal text
Two spaces after options
Fix sub-list
Move styleguide into development folder
Docs: Add another TBX resources page in TBX references
Docs: Add TBXChecker in TBX references
Add :wiki: extlink to allow links old wiki pages

This give us a migration path
Fix broken URL
Remove paragraph refering to missing Pootle doc
List of units can also be of type 'long'
Ignore examples & localhost URLs in linkcheck
Correct URLs

- Adjust for redirects
- Update for broken links
  - Link to internal docs
  - Drop autodocs for some external projects
Use monospace font
Read better but really correct URL text
Correct Sphinx autodoc errors

- Don't document inherited-members for some modules
- Deprecate ts.py
- Correctly Mock our aeidon for Sphinx docs
- Fix broken rST in modules
Use :wiki: link