Fix pom.xml, failurecause mock and test button

Add missing deps to pom
Correct test button to signal an error when dashing not available
Correct mocking of FailureCause
Merge pull request #2 from scoheb/master

Fix pom.xml, failurecause mock and test button
fix findbugs critical and major issues
renaming client class and mock it to make the publisher tests pass
ignore DashBeatsClient because it requires DashBeats server
Support hyperlinks in widgets

Added support for hyperlinks of jobs and builds in widgets
Added new widget for Configuring Failure Causes
Merge pull request #3 from scoheb/master

Support hyperlinks in widgets