Solang: a small UI change and string addition

[Debarshi Ray <debarshi ray gmail com>]

We are planning to change the exporter dialog a little bit to remove
unncessary labels.

Old: http://rishi.fedorapeople.org/export-old.png
New: http://rishi.fedorapeople.org/export-new.png

However, I would like to take this opportunity to clarify a few things:

+ Should be "Create an archive" or "Create archive"?

+ Do we use comments or context for the "Destination" and "Options"
labels? I think we should use comments because it is hard to use them
in a different context. Currently we are using contexts with "A group
of UI controls" as the context information.

We also added a new string to describe the archive creation:
http://rishi.fedorapeople.org/pending-operations-archive.png

Thanks,
Debarshi
-- 
One reason that life is complex is that it has a real part and an
imaginary part.
    -- Andrew Koenig