Merge pull request #70 from nguyenxuanluong-luvina/master

Update installer.groovy for WiperdogServiceInstallation screen
Change how to get stdin and stderr from groovy external process
Merge pull request #71 from nguyenvannghia-luvina/master

Change how to get stdin and stderr from groovy external process
Update to replace job if it exits
Merge pull request #72 from dothihuong-luvina/master

Update to replace job if it exits
fix bug if data content if character
Merge pull request #73 from dothihuong-luvina/master

fix bug if data content if character
Fix bug uninstall Windows service