Hotfix/minor text changes

[Bekabyx]

Closes #1280

As well as the above issue, I also looked at the inconsistency of bold text on our "you have x votes" sentences which Peter and I decided should probably just be bold in every case.

Also, I've dragged our translation file back up to date.

Fix 1, the boldening:

Before

After (inconsistency in the figures is from my slightly outdated local db)

To test this:

• Go to the elections page for any upcoming, locked election. I was running with local.mid-ulster.moyola.2023-05-18
• The numbers of candidates/votes/seats should be in bold per the screenshot

Fix 2, tenses:

This issue was caused by incorrect object referencing - we were assuming we were handling a postelection object but actually it was just an election object.

Before

After

To test this:

• Via the elections page, go to any past election
• The text should read "This election was held on..."
• Returning to the elections page, go to any future election
• The text should read "This election will be held on..."

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1. References a specific issue or if not, describes the bug or feature in detail
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[VirginiaDooley]

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