redirect 7.x-1.0-rc1

Changes since 7.x-1.0-beta4:

• #1263884 by marcusx, Dave Reid, droath, BWPanda: Avoid redirect field and form injection on entities that have a path but makes no sense to have redirects (e.g. comments).
• #995844 by Dave Reid, iamEAP: Added migration path from path_redirect.
• #1392974: Fixed redirect caching not compatible with Varnish due to lack of cache control headers being sent.
• #1774502: Disable calling entity_uri() from redirect_url_inbound_alter() until a proper solution is found.
• #1781736: Updated default redirect view export, added human name, and fixed description.
• Fixed incompatibility with subpathauto module.
• #1580746: Fixed spelling error on the redirect add/edit form.
• #1367278: Fixed the 'Add redirect' on 404 pages did not work correctly if the site_404 variable set (e.g. if the Search 404 or 404 Navigation module is enabled).
• Hide the operations fieldset if no redirects are selected.