Big refactoring that fixes the installation order issue; it was impossible to cancel the installation during the configuration step since the files were already copied and NSIS "Cancel" button mecanism was broken, there is also fixes for: - AGENT-203: Remove the console showing the output of the service install - AGENT-202: During uninstall the gui auto-close does not work
Big refactoring that fixes the installation order issue; it was impossible to cancel the installation during the configuration step since the files were already copied and NSIS "Cancel" button mecanism was broken, there is also fixes for:
- AGENT-203: Remove the console showing the output of the service install
- AGENT-202: During uninstall the gui auto-close does not work

Change-Id: If3aa56aaa517edb1699df9983a813bff1392fb61

ow2-proactive/agent-windows,ow2-proactive/agent-windows,ow2-proactive/agent-windows,ow2-proactive/agent-windows,ow2-proactive/agent-windows