JENKINS-21009 Support for manual triggers from the Build Pipeline Plugin.

JENKINS-21009 Added configuration option for view for enabling/disabling manual buttons and removed unused exception

JENKINS-21009 Changed version to 0.8.0-SNAPSHOT

JENKINS-21009 Fixed folders problem

JENKINS-21009 Fixed a flapping testcase

JENKINS-21009 Fixed taskId in the folder case

JENKINS-21009 Fixed QUEUE status in folders

Fixed unused import