Adjust text for homepage agenda download dropdown

[xmedr]

Let's change up the text for the dropdowns on the homepage when an agenda for a current or upcoming event is available. This'll be a change directly on the boardagendas repo.

Old	New
Get Agenda PDF	Get Agenda/Translations (PDF)
Get Agenda RTF	Get Agenda/Translations (RTF - Accessible)

[xmedr]

Let's plan to make this editable in the cms as well