Add "fallback" for TimeAgo plugin

[pmuens]

Add a barrier so that things such as 2 months ago are translated to the correct date (as it's easier to see what date it was in particular).

[xndrdev]

Maybe only detailed information about the day for "today" (seconds, minutes, hours) and after 24 hours there should be the date.

[pmuens]

That sounds reasonable! Good idea!