Related: rhbz#1047174 avoid access to nonexisting parent dialog

Change-Id: I0bf9116d088adde838993ac5e909a6f3481f883e
tweak button order for alien warn dialog

Change-Id: I6e51951df3bff0d1829bff8e2a436e4030247baf
swap button order in ui to match typical reality

This has no effect on the rendering of this .ui as native button ordering is
active. But it means that under the typical editing-under-GNOME that ones head
is wrecked from the cognitive impedance of the editor and viewer not matching
in order

Change-Id: I8888d4263f05bcecff72496f4cf0ae67345dc644
improve warning message

Change-Id: I2d8aab3f4589750aecb0a9565c595a712fc7bc73
GtkComboBox->VclComboBoxNumeric

Change-Id: Iba1416692a619c1f566f26da5b06ed04342057b3