Update anchor_links.html.

* fix `TypeError` when we are in home
* remove default type and encoding
* format the code
Include anchor_links before the end closing `body` tag.
Update Quickstart re: kramdown default

Update Quickstart documentation to reflect Jekyll’ 2.0 default of
kramdown Markdown engine versus Redcarpet.
Setting log_level earlier to silence info level configuration output.
Merge pull request #2393 from createdbypete/quieter-build-command
Update history to reflect merge of #2393 [ci skip]
Change timezone to Los Angeles
Merge pull request #2394 from penibelst/fix-dates
Update history to reflect merge of #2394 [ci skip]
Merge pull request #2368 from XhmikosR/master
Update history to reflect merge of #2368 [ci skip]
Remove Quickstart' Default Markdown Section

Remove default Markdown section from Quickstart documentation page as
it is redundant and unnecessary at this time. #2387
Merge pull request #2387 from jaybe-jekyll/doc_updates
Update history to reflect merge of #2387 [ci skip]
Remove broken link in extras.md, closes #2400
Merge pull request #2401 from jdavis/patch-1
Update history to reflect merge of #2401 [ci skip]