Meteor has deprecated the `Handlebars` namespace.

Methods from `Handlebars` have been moved into `Spacebars` and/or `UI`.

Change-Id: Ida89a509bb33c6921c924bb4d0683fcc9426411b
Bug fixes and debugging related to 0.8.0.1 upgrade.

Change-Id: I714e5fcf0ecffd55771163a0cb9248bfaca9b8ed
Upgrade to Meteor 0.8.1 (DDP improvements, security fixes for oauth).

Meteor release notes:
https://www.meteor.com/blog/2014/04/30/meteor-081-important-oauth-update
https://github.com/meteor/meteor/blob/release/0.8.1/History.md

Change-Id: I1586c4a5ec64e01ce4502b8634eaa5e6d9fb64ca
Only load AppCache configuration on server.

Change-Id: I6e7c7235118e2af0ad6a9e147e58fc1279a58699
Suppress browser scoll events when new messages are received.

Don't be confused into thinking the user is manually scrolling.

Change-Id: I3ef59faec05de804e2debefa6c0b489d1ddfd792
Turn off AppCache.

We are now exceeding the 5MB limit (which is the most we can cache portably
across browsers) and cjb suspects that appcache is killing our performance
in any case.

Change-Id: Id8bb0f9f7b276dfd85941dea42eba0483ecbd621
Upgrade to Meteor 0.8.2 (potpourri update).

Meteor release notes:
https://www.meteor.com/blog/2014/06/23/meteor-082
https://github.com/meteor/meteor/blob/release/0.8.2/History.md

Change-Id: I203b615b76da085dea0dde7b03623c4e5b7dfe4d
Upgrade to Meteor 0.8.3 (performance improvements).

Meteor release notes:
https://www.meteor.com/blog/2014/07/29/meteor-083
https://github.com/meteor/meteor/blob/release/0.8.3/History.md

* Used new `Template#autorun` method which automatically cleans up the
computation when the template is destroyed.

Change-Id: I4a0213ae84355701d88de268c0fc55bb36762fe9
Use Gravatars instead of names for the list of users in the chat room in the header.