Change "Latest contributions" to use sentence text as click target

[githubshrek]

Currently the https://tatoeba.org/eng/contributions/latest page uses the "i" icon at the end of the sentence to link to the sentence page. I propose that we:

• use the sentence text itself to do the link (using the same Tatoeba-green link colour and hover behaviour as the link to the user profile)
• remove the "i" icon, which will then become redundant

This is the same concept as expressed in https://github.com/Tatoeba/tatoeba2/issues/2779 but explicitly making the change here on the "Latest contributions" page. Indeed, this would be a gentle way to introduce the idea of linking based on the sentence text.

I would also remove the then redundant "i" icon.