Added appropriate attributes

The values eduPersonAffiliation and eduPersonScopedAffiliation have been
added to the attribute resolver file.
Modified bootstrap.sh to ask for attribute

Bootstrap script will now ask the user to confirm the existence of the
eduPersonAffiliation attribute. This will affect how the attribute-
resolver.xml file is configured.
Added conditional commenting

Comment markers will conditionally appear depending on whether the
attribute eduPersonAffiliate exists, as confirmed by the user in
bootstrap.sh script.
Fixed an issue with a missing underscore

Fixed syntax error resulting from missing underscore in function
invocation.
Removed unnecessary comments

Comments that interfered with conditional commenting have been removed
as they are not necessary.
Merge pull request #116 from ausaccessfed/feature/add-scripted-attributes

Added scripted attributes eduPersonAffiliation and eduPersonScopedAffiliation
Resolves #111