Update pom.xml to work with changed shibboleth URLs and IdP version bump to 2.4.
I also needed to add compiler target/source 1.5 properties with OpenJDK7 but not sure that belongs in here.
Re-model example/login.jsp on current upstream version
Merge pull request #1 from peter-/master

Update pom.xml to work with changed shibboleth.net repository URLs