Reorganizes local git support to exclude from web
Swaps sha1 usages to md5 to avoid needing sha1 on the web (md5 is required by Gravatar)
Avoids crypto-browserfy and imports md5.js directly
Uses platform crypto for random nonce strings

Fixes issues with editor.id no longer being available

Makes them conditional on state

* adds option to disable click actions on recent changes and authors code lens commands

* Updates documentation in the README file to reflect the changes

Adds new reveal commit in Repositories view code lens command option
Adds new show commits in Search Commits view code lens command option

Giving up on better else/catch/finally formatting -- can't fight anymore
Switching to tabs for better accessibility
https://twitter.com/sh4na/status/1146837957200027648

Adds `${committerAgo}`, `${committerAgoOrDate}`, `${committerDate}`
Repurposes `${authorAgo}` & replaces current ones w/ `${author}, ${ago}`
Repurposes `${authorAgoOrDate}` & replaces w/ `${author}, ${agoOrDate}`
Renames defaultDateType to defaultDateSource
Points format settings to new formatting wiki

Fixes #537

Keeps all path manipulation on the host rather than guest
Fixes shared/local path munging for mac/windows
Keeps current user lookup local when a guest
Keeps difftool lookup local when a guest
Avoids fetch date lookup when a guest
Stops clearing node_modules (for now)

Fixes auto-refresh context on repositories view loading

Adds codeLens.includeSingleLineSymbols setting

Changes changelog image links to permalinks
Moves all images for docs into a docs folder
Removes unused images

Replaces git content provider with git fs provider
Adds Buffer output support to git calls