Updating classpath
Update Issue 172

Add more regression tests to cover more use cases and fix the
implementation as it should not be able to modify Contact
Header on OPTIONS requests
fixing classpath and poms
Add gitignore
Classpath fix
Porject fix
Fix pom and classpath
Fixes Issue 185

update intro chapter with new text and images
(cherry picked from commit 274d186d7ef018ddf6b792675944aa998d4bc77a)

Conflicts:
	docs/sources/src/main/resources/en-US/Book_Info.xml
	docs/sources/src/main/resources/en-US/concept-chapter-ittsss-Introduction_to_the_SIP_Servlets_Server.xml