[Tezos] Fix delegation and add delegations tx history

[Pantani]

closes #750

Headline

• Fix delegation information
• Add delegation tx history

http://localhost:8420/v2/tezos/staking/delegations/tz1hpUTmafsAEH8vQTirnZsvPWZ3wZ6oEkUw

{
  "delegations": [
    {
      "delegator": {
        "id": "tz1V3yg82mcrPJbegqVCPn6bC8w1CSTRp3f8",
        "status": true,
        "info": {
          "name": "TezoShop",
          "description": "TezoShop is PRO baker with low fee and hight efficiency",
          "image": "https://raw.githubusercontent.com/trustwallet/assets/master/blockchains/tezos/validators/assets/tz1V3yg82mcrPJbegqVCPn6bC8w1CSTRp3f8/logo.png",
          "website": "https://tezoshop.art"
        },
        "details": {
          "reward": {
            "annual": 5.786109
          },
          "locktime": 0,
          "minimum_amount": "0",
          "type": "delegate"
        }
      },
      "value": "2528000",
      "status": "active"
    }
  ],
  "balance": "2528000",
  "address": "tz1hpUTmafsAEH8vQTirnZsvPWZ3wZ6oEkUw",
  "coin": {
    "coin": 1729,
    "symbol": "XTZ",
    "name": "Tezos",
    "decimals": 6
  },
  "details": {
    "reward": {
      "annual": 6.09
    },
    "locktime": 0,
    "minimum_amount": "0",
    "type": "delegate"
  }
}

http://localhost:8420/v1/tezos/tz1hpUTmafsAEH8vQTirnZsvPWZ3wZ6oEkUw

{
  "total": 6,
  "docs": [
    {
      "id": "onfvhheWth5GCbKKAc9KLZoqQ9AFzAS27vfPCN2DGcGuPA31jmc",
      "coin": 1729,
      "from": "tz1hpUTmafsAEH8vQTirnZsvPWZ3wZ6oEkUw",
      "to": "tz1V3yg82mcrPJbegqVCPn6bC8w1CSTRp3f8",
      "fee": "1500",
      "date": 1580773694,
      "block": 809061,
      "status": "completed",
      "type": "any_action",
      "direction": "outgoing",
      "memo": "",
      "metadata": {
        "coin": 1729,
        "title": "Delegation",
        "key": "stake_delegate",
        "token_id": "",
        "name": "Tezos",
        "symbol": "XTZ",
        "decimals": 6,
        "value": ""
      }
    },
    {
      "id": "oneqVXTkJqDvCDfxqggnzveo6U28Bp5sByguaqSZ7seBgQgzZSG",
      "coin": 1729,
      "from": "tz1hpUTmafsAEH8vQTirnZsvPWZ3wZ6oEkUw",
      "to": "",
      "fee": "1500",
      "date": 1580770414,
      "block": 809007,
      "status": "completed",
      "type": "any_action",
      "direction": "outgoing",
      "memo": "",
      "metadata": {
        "coin": 1729,
        "title": "Undelegation",
        "key": "stake_delegate",
        "token_id": "",
        "name": "Tezos",
        "symbol": "XTZ",
        "decimals": 6,
        "value": ""
      }
    },
    {
      "id": "onm4rouUdDPTVfQX7mHz1uZbQD7KrmaA5D1np5QApMJKir8qw5V",
      "coin": 1729,
      "from": "tz1hpUTmafsAEH8vQTirnZsvPWZ3wZ6oEkUw",
      "to": "tz1egbN6RK2bM5vt4aAZw6r9j4nL8z49bPdS",
      "fee": "1500",
      "date": 1580770054,
      "block": 809001,
      "status": "completed",
      "type": "any_action",
      "direction": "outgoing",
      "memo": "",
      "metadata": {
        "coin": 1729,
        "title": "Delegation",
        "key": "stake_delegate",
        "token_id": "",
        "name": "Tezos",
        "symbol": "XTZ",
        "decimals": 6,
        "value": ""
      }
    },
    {
      "id": "op9J7ZvqwhT3MgZBHk9kZF85TrErUbZYTyoJYScUMmD3q5rDczs",
      "coin": 1729,
      "from": "tz1hpUTmafsAEH8vQTirnZsvPWZ3wZ6oEkUw",
      "to": "",
      "fee": "1500",
      "date": 1580769514,
      "block": 808992,
      "status": "completed",
      "type": "any_action",
      "direction": "outgoing",
      "memo": "",
      "metadata": {
        "coin": 1729,
        "title": "Undelegation",
        "key": "stake_delegate",
        "token_id": "",
        "name": "Tezos",
        "symbol": "XTZ",
        "decimals": 6,
        "value": ""
      }
    },
    {
      "id": "opDgGEYTqA67i49Cefv8hwM5PyF3d33x1VPAeEf8KHp559QUV2L",
      "coin": 1729,
      "from": "tz1hpUTmafsAEH8vQTirnZsvPWZ3wZ6oEkUw",
      "to": "tz1egbN6RK2bM5vt4aAZw6r9j4nL8z49bPdS",
      "fee": "1500",
      "date": 1580768854,
      "block": 808981,
      "status": "completed",
      "type": "any_action",
      "direction": "outgoing",
      "memo": "",
      "metadata": {
        "coin": 1729,
        "title": "Delegation",
        "key": "stake_delegate",
        "token_id": "",
        "name": "Tezos",
        "symbol": "XTZ",
        "decimals": 6,
        "value": ""
      }
    },
    {
      "id": "ooEqaCK7goS6ewJj2yGSPVnCiMXtVRu1Z2GN1LvXsYo6E1qLyjF",
      "coin": 1729,
      "from": "tz1SiPXX4MYGNJNDsRc7n8hkvUqFzg8xqF9m",
      "to": "tz1hpUTmafsAEH8vQTirnZsvPWZ3wZ6oEkUw",
      "fee": "2940",
      "date": 1580768194,
      "block": 808970,
      "status": "completed",
      "type": "transfer",
      "direction": "incoming",
      "memo": "",
      "metadata": {
        "value": "2800000",
        "symbol": "XTZ",
        "decimals": 6
      }
    }
  ],
  "status": true
}