[freeciv-i18n] activeunits dialog buttons in russian (GTK-2.0 client)

[evyscr <evyscr@xxxxxxxxx>]

The problem is that words "Upgrade" and "Refresh" have the same traslation in 
Russian.
So both buttons have the same name.
It is easy to rename translation of first button, but the second would have
similar sense. In GTK "Refresh" was replaced (in translation) by "Reload"
Is there any way to rename standard GTK2-stock button like "Reload" or "Refresh 
window"?
I have no another ideas except to split buttons in two rows (but IMHO it will 
be ugly)
or to use non-stock button.
Temporary fix of ru.po attached (made for current CVS version).

Thanks, evyscr.

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