Updated ember and ember-data. resolves #17

Ember v1.7.0 seems to be broken... This needs to be further investigated. Switching from v1.6.1 to v1.7.0 breaks the binding of the value attribute of the searchbar input element. Might have something to do with the controller of the {{render}} handlebars helper.
Reverted a585e1bd... requirejs fails to build the latest ember(-data) versions

The internal module loader structure of ember and ember data has changed and causes requirejs to fail. This can be fixed by replacing both module names or by replacing the name of the internal module loaders. This is quite ugly and I rather wait for a fix.

Also changed jquery version to address the old dependency issue...
The {{link-to}} helper is now able to refresh a route. resolves #18
Fixed requirejs build bug for latest ember and ember-data

see a585e1b, 0e863c8
Also uglify requirejs besides the main app code