[login] Add dropdown translation in login summary statistics

[HachemJ]

Brief summary of changes

This PR translates the project dropdown in the Login Summary Statistics page and the CSV text copied to the clipboard when using the export button.

Testing instructions (if applicable)

1. git checkout HachemJ/FixDropdownInLoginSummaryStatisticsNotTranslated
2. delete project/locale
3. copy raisinbread/locale into project/locale
4. run make dev (make sure it ran the msgfmt --use-fuzzy -o table.mo table.po commands)
5. Go to the Login page (log out first if you are currently logged in).
6. Switch the language to French, Hindi or Japanese.
7. Verify that the Project dropdown is translated.
8. Select each project from the dropdown and verify that the statistics update correctly.
9. Click the Copy CSV button.

10. Paste the copied content and verify that the CSV headers (Project, Statistic, Value), project names, and statistic labels are translated correctly.

Link(s) to related issue(s)

• Resolves [Login] Dropdown in Login Summary Statistics not translated #10560 (Reference the issue this fixes, if any.)

[driusan]

@skarya22 can you review this?

[skarya22]

I am realizing that these fields are added through SQL queries at /SQL/Login_Summary_Statistics, and can be overwritten by projects through the project/tools/Login_Summary_Statistics folder.

However, if a project adds queries, to translate them, they would have to override this file in the project folder, causing them to have to copy the whole login module to the project.

Instead, we should move the translations to SQL like in #10513

Let me know if this makes sense -- since these fields are technically generated through SQL I think their translations should be too so that projects can override them easily.

[driusan]

@skarya22 You don't need to override the whole module to update the translation strings. project/locale/ takes precedent over the module.

[skarya22]

Ah I see, then @HachemJ we can leave it as is! This would be easier then

[skarya22]

LGTM!