Convert RID_TP_GENERAL tabpage to .ui

Change-Id: I32300c3d06a8c30d8e75f343cd2af8acef7296ae
Reviewed-on: https://gerrit.libreoffice.org/10989
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>