Add ability to configure read access of container

Allow the user to set the container access to private or public.

For public containers, the public URL for accessing it is also provided
to the user.

List containers does not include the metadata of the container. Used ajax
to load the container metadata in the Container table to be able to render
the Container table immediately.

Change-Id: If1e848ad49f522eab8f1b264d54611615481848c
Implements: blueprint swift-container-public-access
Merge "Add ability to configure read access of container"