Squashed '_plugins/' content from commit bea0ac2

git-subtree-dir: _plugins
git-subtree-split: bea0ac2bd25e3cb13fd59ad1e8d85743d5d00305
Merge commit '8cf4d3e23d7006f62e0777e1752aa72370cc41ba' as '_plugins'
Add links and name to sidebar.