Changed + symbol to ✚ which just looks better
Authorization required for all contacts and notes

Added CanCan authorize_resource to companies, people, contacts and
notes. Regular users can manage all three.
ImportContact controller spec
Elastic:reindex task creates new timestamped index

Scoping prevented Elasticsearch from caching company names into a
person's index record. We need the company name cached so we don't have
to keep hitting Mongo for that information when traversing the index.
The problem was the original importer used Contact.unscoped.import which
worked for until a person record tried to retrieve the company record.
Without the account scope, it failed.

The new reindex task will create a timestamped index with scoped Contact
records. We can then assign 'rcrm-contacts' as an alias to the new
index.
Added created date to person and company #show

A request was made to add the created date on the records so the users
can see how old the record is.
Added a tiny sign out link on recent activity

We need some kind of quick sign-out link. For now it's just at the
bottom of recent activity.