vrde 357c3ee8eb Problem: API returns 404 for existing empty blocks (#2321)
* Problem: API returns 404 for existing empty blocks

Solution: Empty blocks are not store in MongoDB because Tendermint does
not notify BigchainDB about them. In case a user requests a block that
is not in our MongoDB, we check if the requested height is less than or
equal to latest_block_height. If that's the case, we return an empty
block. If the requested height is greater than latest_block_height, then
we return 404.

* Address Lev's comment

* address Lev and Vansh comment
2018-05-31 17:15:17 +02:00
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