[servlet.cookies] initial copy
[servlet.event-listeners] initial copy
[servlet.nonblocking] initial copy
Update gitignore
[servlet.event-listeners] add java files
[servlet.nonblocking] remove project since there are warnings
Merge pull request #1 from Websphere-Liberty-Java-Samples/master

Merge in Alex's pull request from 6/20
add generated files in WebContent/WEB-INF/ to gitignore
Merge pull request #6 from aguibert/master

Add servlet.cookies and servlet.event-listeners sample