Register chat panel as `spa2014-chat-panel`.

It used to be registered as `spa-2014-chat-panel`
Register application as `spa2014-app`.

Used to be registered as `spa-2014-app`.
Update CSS to remove `-` from element names.
Use single quotes instead of double quotes.
Remove config for `flux-dispatcher`.
Reorder config.
Create some chat messages data.

These messages will the ones displayed in the chat panel when a recent conversation is selected.