Improve the block view

[AlexITC]

The block view could be improved.

Expected behavior

The block view displays a summary, and a paginated list with a summary for each transaction, the list is sorted from newest to oldest, it displays 10 items by default, example:

Actual behavior

The block view displays the list of all the transactions which doesn't help too much because there are no details for the transactions:

Steps to reproduce the behavior

Go to https://xsnexplorer.io/blocks/95833f1e6a3475a0bf2478865e23a4e731d2f5ccf82883ee9a3d9a9668ee4e24

[AlexITC]

The endpoint to call should be GET /blocks/:hash/transactions.

This is an example call:

➜  server git:(develop) ✗ http GET localhost:9000/blocks/000004645e2717b556682e3c642a4c6e473bf25c653ff8e8c114a3006040ffb8/transactions limit==3 orderBy==received:desc
HTTP/1.1 200 OK

{
    "data": [
        {
            "blockhash": "59e80af3e04c597161e02fb2910c29b2fcc7bc4d8ece56583c9abc15616a36f8", 
            "id": "7ea61a229b598ae45b618d3a148760887e70d65000dfc73b49cf96d91825a918", 
            "received": 15000, 
            "sent": 0, 
            "size": 519, 
            "time": 1522809775
        }, 
        {
            "blockhash": "7a1e7c4be6b0b885e87935a24b250d6606444d42262b0eceedeedf64ed6434d7", 
            "id": "f33a48f3e1c2cb6f760d32d7db09ef077e4db1d47543abe2eb90ed33474887fc", 
            "received": 42.75, 
            "sent": 22.5, 
            "size": 234, 
            "time": 1526174028
        }, 
        {
            "blockhash": "244987e5695f50c078ff9ddcf30dd3c2ba7ff6d7810ec8a610216b72131291f0", 
            "id": "1be1c4748cf238233a92f9871574bad3023fad69cb77fba2477e2a8a849f9ce7", 
            "received": 22.5, 
            "sent": 0, 
            "size": 234, 
            "time": 1523090311
        }
    ], 
    "limit": 3, 
    "offset": 0, 
    "total": 88
}