Fix netcfg/disable_autoconfig

Do not set netcfg/use_autoconfig to true just because netcfg/disable_dhcp
is false (which is the default), otherwise netcfg/disable_autoconfig has no
effect. (Closes: #703747)
Also close old bug
[l10n] [SILENT_COMMIT]  Commit changed/added files
[l10n] [SILENT_COMMIT]  Commit changed/added files
merge