Image gallery was only working with images URL ending with images prefix.
This fix makes it works with any image URL.
removed the mock tab, added a temporary Joshfire logo and changed the tab icons
removed an useless line ?
Datasrouces can define Server Side Events to listen to.
Data is added to the collection of this datasource
Views are re-renderend because of collection change.

new version of W3C bootstrap, that defines the Server Side Event stream for the first datasource
Polyfill for Server Side Events (EventSource.js)
optimize