Context Configuration

Extracted Configuration and Context from the MonitorConfiguration and dissolved it.
onConfigReload(File file) will now have access to configuration and context after the refactoring.

Mutual Auth, Licensing, Bug Fixes

Implemented mutual SSL Authentication
Added args(task arguments from monitor.xml) as an argument to the initializeMoreStuff() method.
Added Copyright header to all the files.
Removed jsr dependency from pom.xml.
Packaged LICENSE.txt and NOTICE.txt.
Made the names for passwordEncrypted and encryptionKey consistent.
Refactored dashboard module to be consistent with CloseableHttpClientUsage(except the uploadFile() method).
Fixed the bug caused by casting ThreadPoolExecutor to ScheduledThreadPoolExecutor.
Provided a method in ABaseMonitor that can be used to set FileWatchListener callback in the setConfigYml() method of MonitorConfiguration when it is called in the initialize() method of ABaseMonitor.
Added changes from the commons version 1.6.6.1, related to CSRF token for accessing controller APIs in the CustomDashboardUploader.