Issue #84 Increase number of events in block to 5

Change default event limit of a block.
Change number of events fetched per day at startup.
Issue #82 Replace save button with spinner on save

When saving an event, a spinner should take the place of the button
to clarify that work is being done.
Issue #8 Save user country and subkast

Add a controller for asynchronously saving user country and subkast.
Add a sync method to user to only send back user and subkast data.
Issue #8 Wire up user to save on filter

Add listeners in the user mediator to save country and subkast on filter.
Startup event store with user preferences.
Remove call to filter triggers in app startup.
Make country CA explicit in event store test cases.
Merge branch 'master' into design
Issue #8 Sidebar use country and subkast from user

When sidebar starts up, look for country and subkasts on user.
Use these subkasts and country in sidebar display.