Add valueConversion renderingOption for auto loading storage data
Create resolver for generic plugins
Support custom plugin props in script node exec/file copiers

* use a conventional project/framework property making for the property
  configs
* Allow renderingOptions to be defined for script plugin config
  properties
* support valueConversion rendering option to load storage values
Allow node attributes as instance scope data for script plugins
Support script-based node execu plugin custom properties for #979
File storage tree handles native path separators for #978
Use preset var dir for storage tree config not dynamic #980

* first launch of launcher will not have a framework.properties, causing
* a '${framework.var.dir}' dir to be created
Cleanup input stream when reading jar
Generate a remote copy destination path for #981
Merge branch 'issue/981-script-based-file-copy-destination' into development
Add toString
Script-based plugin use ExecArgList for cleaner local exec interface
Fix example in ssh-script-plugin readme
Close filestream after copying file fixes #977
Change warn to debug for failed file delete
Merge pull request #3 from rundeck/development

merge