Added translations for (sub)dialog tool tips

[lloyddewit]

Partially fixes issue #3721
Translates tool tips associated with (sub)dialog controls. I still need to investigate tool bar tool tips.
@rdstern Please could you test? thanks
Please note that this PR includes a test database that 'translates' tool tips into French by adding 'fr'. I will create a separate PR for the real French CrowdIn translations.

@shadrackkibet Almost all the changes are in the TranslateWinform Nuget package so there is not much to review in this PR. You'll get an opportunity to review the Nuget package code in the coming weeks.

[rdstern]

This looks good. I saw you solved your remaining issue of being able to add the translation to the calculation keyboard, which is where I started.
This showed (possibly) a potential problem for those translations. The first is sqrt that is translated as racine. The tooltip is frsquare root. For example sqrt(3) = 3 ^ 0.5 = 1.732.

Another example is ceiling, translated as plafond. The tooltip is frInteger above the given value. For example ceiling(3.5)=4, ceiling-3.5 = -3

In each case we want to translate the first part, but we don't want to translate the formulae. So ceiling can be translated, but not ceiling( . Or perhap[s nothing when the sentence has an = sign.

I then looked at the column summaries. Here there isn't the fr and instead the translation is implemented - fine.

I like it. Now the task is to use the tooltips more!

[lloyddewit]

@rdstern Thank you for the test. If you are happy with the mechanism, then please could you approve?

I think that all your comments above can be solved by the CrowdIn translations. So I moved these comments to issue #6512

[lloyddewit]

@shadrackkibet please could you approve and merge? thanks

[shadrackkibet]

@lloyddewit Translation (mechanism) is part of the labels to be used in PRs? I thought we only use it for issues. This is the first PR with such a label.

[lloyddewit]

@lloyddewit Translation (mechanism) is part of the labels to be used in PRs? I thought we only use it for issues. This is the first PR with such a label.

@shadrackkibet yes, you are right! thanks for noticing, I corrected it