Add Role Access field to General settings section
Filter user & role caps to grant `view_stream` cap based on allowed
roles
Fix typo in filter name
Change Settings page document title to `Stream Settings`
Only show link(s) to settings page if viewing user has the required cap
Merge branch 'master' into issue-59

Conflicts:
	connectors/settings.php
Adding fieldset wrapper, field description changes
Merge pull request #77 from x-team/issue-59

Add setting for role access