This commit constitutes the first nightly bootstrapping build. As of now, bootstrapping supports most coronas but no InformationProvides. Only the BaseWidget is supported at the moment.

+ String Externalization for to make changes regarding the boostrapping XML maintainable.
+ Updated some libraries such as Guava and JDOM2 (see Changelog)
+ Added constructors to most base builders of the coronas and the base widget to work with a provided JDOM2 Element node.
+ Added bootstrapping classes with static methods to provide support to bootstrap other major classes such as concrete NetworkArapter implementations.