Get sse events from funnel, reshape app-state for easier handling

Get sse events for the basic funnel query given in the README.
Use query ids as keys.

Signed-off-by: Etienne Spillemaeker <etienne.spillemaeker@af83.com>
Store sse events payload in application state

Use static query id for now (from funnel_http README)
Fix query list display

The use of a hash map to store the queries broke the rendering of the
list of the queries. We create a vector from the hash-map on the fly
to use the `build-all` om function.
Use swap instead of reset when storing sse notifications
Rerender timeline when receiving data
Fix typo (missing parenthesis)
Use new data format for sse data and translate them to clojure data
Inject dummy github payload in the main store at init