Partman templates need English changes - DO NOT translate until being noticed

[Christian Perrier <bubulle@debian.org>]

Well, while working on french updates to partman templates, I see that
besides typos, there are some things which need changes to English
strings (such as yelling too loud here and there and some awkward
formulation).

This also is why string freezes exist : most tempaltes in d-i have
been carefully discussed for keeping a difficult balance between good
English, less jargon, clear wording and a consistent writing style.

Some of the new strings do not follow this.

Translators, do NOT update partman-* until I notify you to do
so. Let's consider the D-I string freeze is temporarily suspended.

I'll try to have this sorted out today.

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