Code Generator for Eclipse Code

Added test to compare for unequal length of files

Added Test case for file comparator

Added test files for the comparator

Added methods equals and hashCode

Added helper for file comparison

Generated an instance of IOutputFileModel to generate the code

Renaming of GeneralHeadlessXMLSerializer to GeneralHeadlessXMLSerializerfactory to avoid confusion

Add a Test for the new class

Add a new class to initialize a headless generation. In the process refactor some existing functionality that was placed in the UI plug-in so it can be used mor generally

Whith the moving of the class DBDefinitionPage the extension definition must also be moved. This concludes the resulting error of #40.