fix authentication status in picketlink.js
have security filter return custom header indicating authentication status
removed unnecessary endpoint methods, fix token handling issue in javascript
Merge pull request #389 from pedroigor/master

Meaningful exception message.
Merge pull request #390 from pedroigor/master

[PLINK-581] - EntityManagerProvider is throwing NPE when EntityType.getJ...
Merge pull request #391 from pedroigor/master

[PLINK-582] - Better message when failing to create default partition during startup.