Vacuum polarization

• Fixed a bug where Windows users could not install modules with default stanzas.
• Missing recommended or suggested modules will no longer stop an install (but will generate a warning).
• The GUI now provides an "always close on success" option for the activity log.
• The NetKAN can will retrieve KSP compatibility info from KSP-AVC version files if a magic "$vref" : "#/ckan/ksp-avc" line is present in its input.