Removed all restrictions on EJSON types in MongoDB
use EJSON as the prefix instead of a space
Merge remote-tracking branch 'origin/devel' into all-types-mongo
There only restriction on what you can stick in your Mongo database is now
"EJSON-able"

Merge branch 'all-types-mongo' into devel
Force source URLs to be hyperlinks in stack traces in browser consoles

See https://github.com/meteor/meteor/issues/725#issuecomment-13940222
avoid creating dependency on underscore
Add kexec and shell-quote for version springboarding on the engine branch.
remove debugger line
User documents have ids when onCreateUser and validateNewUser hooks run
Update History.md
Improve test
fixed matching-brace typo in all-rooms example
Fixed meteor update notice.

Makes the notice easier to understand when the meteor installation is a git checkout.
Capitalize Meteor, flow.
Merge #746: Improved meteor update notice