Contrast-Finder v0.4.1

Upgrade-o-meter:
just replace the .war file and restart Tomcat

Features:

• #2 Webapp - Used input tag type=color instead off type=text
• Added descriptor.xml (building tar.gz with maven)
• Added SNAPSHOT-local_from-Tomcat/Dockerfile

Security:

• #9 Webapp - Don't expose session ID in the URL