frozen Pyngui

This is a major release with following highlights:

• Python rewrite of the GUI allowing to configure smartd and erroractions after install
• Simplify command-line options for unattended installations
• Improved erroraction script and log output
• Updated upstream release to v6.5-1
• Installer now uses 64 bit binaries on 64 bit systems (following upstream)
• Updated mailsend to v1.19
• Simplified upgrade path
• Multiple fixes

For details, see changelog file.