Clear files and filenames list before downloading a fileset instance.
Merge remote-tracking branch 'origin/master'

Conflicts:
	solutions/Playground/models/Interactive.mps
Add intention to remotely deploy and activate a FileSetServer instance.
Add intention to activate a previously deployed FileSetServer instance.
Fix and rename restart manager intention.
Attach a downloaded File to the Entry it belongs to.
Implement FileSetServer restart intention. Add filesets-stop-server command to packages.
Refactor the status of FileSetManager from boolean to string. Modify all the intentions and behaviors accordingly. Change the status when a deployment or restart is executed.
Remove name from DownloadArea. Tweak ExecutionEnvironment editor.
Remove name from JobArea.
Remove name from FileSetArea.
Remove name from PluginRepository.
Recreate environments in the sample solutions.
Fix RegisterTool behavior.
Sample jobs and fileset instances in the Tutorial solution.
Remove FileSetArea name from FetchMetadata intention.
Jobs completed in Tutorial.
Fix creation and connection of RPCManager for FileSetArea.
Add report messages to ImportTool.
Remove duplicate deployment of FileSetServer.