Update grails-app/controllers/rgms/publication/ResearchLineController.groovy

fixing bug #61
Update grails-app/domain/rgms/publication/Publication.groovy

Removing duplicated List of members
Fixed duplicate members declaration in Publication and a configuration issue, both of them necessary for running with Grails 2.2.0. Change also the admin password, as required by Paola.
Created functional tests for the Article feature. Changed some files to comply to Grails 2.2.0 and to add the cucumber plugin for supporting the tests.
Added new web-based scenario to feature article, and implemented its associated test with a number of Page classes. Adapted and created a number of cofiguration files so that we can run web-based test cases with Geb.
Upgrading grails version to 2.1.0