(issue #951) replace absolute OAE links w/markdown
(issue #951) add semicolon
(issue #951) split code into separate lines
(issue #951) replace general links
(issue #951) update unit tests
(issue #951) render markdown comments in email
Folders - Message posting, listing & deleting
JSDoc / code cleanup in folder/discussion comments
Added a folder-comment activity
(issue #951) replace markdown.js with marked.js
(issue #951) add tests for markdown
Reprocessing folders when one of their content item’s their visibility changes
Merge branch 'master' of https://github.com/oaeproject/Hilary into issue951

Conflicts:
	package.json
Rename folder-message to folder-comment
Regenerate preview images when a folder’s visibility changes
Merge branch 'folders-messages' of https://github.com/simong/Hilary into folders-messages
Added some documentation fixes to folder commenting
Configurable email domains per tenant
Add folders to the `message` activity stream
Merge branch 'folders-messages' of https://github.com/simong/Hilary into folders-messages