Google misses predictions, so that PB site search sometimes fails

[vipulnaik]

It seems like Google is missing predictions, an issue related to #78. For instance:

https://www.google.com/search?sitesearch=predictionbook.com&q=despacito&x=0&y=0

returns the homepage, from the time that prediction was on the homepage, but not the link to the actual prediction:

PredictionBook: How sure are you?
https://predictionbook.com/
Despacito will reach 2 billion YouTube video views on or before January 1, 2018, and will be the fastest song to have ever reached 2 billion views at the time it ...

For reference, the actual prediction is at https://predictionbook.com/predictions/182454