Added the initial classes for xpath
Added support to initialize and get values using xpath
added in-memory update for saml-attributes
removed unnecessary annotations
updated to xpath based attribute changer
deleted old saml message class
renamed and refactored samlmessage class
refactored to use new saml message class
removed namespaces from xpath
Fixed NPE
fixed reinitialization of config at each use
removed and refactored attributeset class
refactored existing default configuration data file
refactored to use autochange attribute from config xml
fixed issue with root element
fixed some minor bugs
renamed some UI classes
updated default config file
fixed default attributes' value being set
Merge pull request #15 from pulasthi7/xpath

Redesigned to use Xpath to change saml message. fixes #13, fixes #14