[#20] Remove harvest fetch error checking for now

I could not find any error on the server and it prevents the play from
finishing properly.
[#20] Install ckanext-glasgow requirements

Also don't list ckanext-harvest as requirement for now, will get
installed as part of the global play.
Add helper script for create test WAAD users
Update config options in README
Merge branch 'master' of github.com:okfn/ckanext-glasgow