fix: update translations for instructor toolbar and masquarade widget

[AnnHalii]

Issue: #917

Description: Update translations for instructor toolbar and masquarade widget. I'm contributing on behalf of Raccoon Gang

Screen after adding changes(fr locale):

[openedx-webhooks]

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[natabene]

@AnnHalii Thank you for your contribution. Once you fill out the CLA forms and they are processed, I will confirm here and we will be able to review your code.

[natabene]

@AnnHalii Are you still interested in pursuing this? If so, can you please submit the requested forms so we can review your code?

[e0d]

@idegtiarov shoule @AnnHalii be covered under your CLA?

[natabene]

@AnnHalii We have not heard from you in a while, so I will close this for now.

[openedx-webhooks]

@AnnHalii Even though your pull request wasn’t merged, please take a moment to answer a two question survey so we can improve your experience in the future.

[jciasenza]

I have taken this change in issue #1193

If you review it, it could be solved, thank you very much!!!
Sincerely
Juan Carlos (Aulasneo)