Split js logic into multiple files

[maxaleks]

Closes #2721

[coveralls]

Pull Request Test Coverage Report for Build 9a9b8435-aa9d-4d6a-8739-b472d2a1c912

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 75.095%

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Totals
Change from base Build 10e974ea-1ae5-48e7-bf8e-0224aed7f40c:	0.0%
Covered Lines:	5506
Relevant Lines:	7332

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💛 - Coveralls

[vbaranov]

@maxaleks one test failed:

error: assign @conn not available in eex template.  Please make sure all proper assigns have been set. If this is a child template, ensure assigns are given explicitly by the parent template as they are not automatically forwarded.  Available assigns: [:action, :module_name] 

[vbaranov]

@maxaleks API -> Eth RPC "Try it out" button doesn't work. It can be reproduced with eth_blockNumber method of API

[vbaranov]

@maxaleks there is a bug in this PR causing this error:

2020-01-30T14:06:22.044 [error] GenServer #PID<0.9627.0> terminating
** (ArgumentError) assign @conn not available in eex template.

Please make sure all proper assigns have been set. If this
is a child template, ensure assigns are given explicitly by
the parent template as they are not automatically forwarded.

Available assigns: [:transaction, :view_module, :view_template]

    (phoenix_html) lib/phoenix_html/engine.ex:133: Phoenix.HTML.Engine.fetch_assign!/2
    (block_scout_web) lib/block_scout_web/templates/transaction/_tile.html.eex:79: BlockScoutWeb.TransactionView."_tile.html"/1
    (phoenix) lib/phoenix/view.ex:399: Phoenix.View.render_to_iodata/3
    (phoenix) lib/phoenix/view.ex:406: Phoenix.View.render_to_string/3
    (block_scout_web) lib/block_scout_web/channels/transaction_channel.ex:47: BlockScoutWeb.TransactionChannel.handle_out/3
    (phoenix) lib/phoenix/channel/server.ex:301: Phoenix.Channel.Server.handle_info/2
    (stdlib) gen_server.erl:637: :gen_server.try_dispatch/4
    (stdlib) gen_server.erl:711: :gen_server.handle_msg/6
Last message: %Phoenix.Socket.Broadcast{event: "transaction", payload: %{transaction: %Explorer.Chain.Transaction{input: %Explorer.Chain.Data{bytes: <<169, 5, 156, 187, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 102, 181, 82, 184, 17, 68, 33, 114, 20, 138, 212, 30, 74, 238, 215, 197, 50, 140, 149, 176, 0, 0, 0, 0, 0, 0, 0, 0, 0, ...>>}, inserted_at: ~U[2020-01-30 14:06:17.945273Z], cumulative_gas_used: #Decimal<4580513>, internal_transactions: #Ecto.Association.NotLoaded<association :internal_transactions is not loaded>, block_number: 9383953, updated_at: ~U[2020-01-30 14:06:17.945273Z], s: #Decimal<11933055616160433748955899801164253603553493910711742979123268369407413996830>, nonce: 32, created_contract_address: nil, gas_used: #Decimal<58001>, forks: #Ecto.Association.NotLoaded<association :forks is not loaded>, value: #Explorer.Chain.Wei<0>, __meta__: #Ecto.Schema.Metadata<:loaded, "transactions">, to_address: %Explorer.Chain.Address{__meta__: #Ecto.Schema.Metadata<:loaded, "addresses">, contract_code: %Explorer.Chain.Data{bytes: <<96, 128, 96, 64, 82, 96, 4, 54, 16, 97, 0, 109, 87, 96, 0, 53, 124, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, ...>>}, contracts_creation_internal_transaction: #Ecto.Association.NotLoaded<association :contracts_creation_internal_transaction is not loaded>, contracts_creation_transaction: #Ecto.Association.NotLoaded<association :contracts_creation_transaction is not loaded>, decompiled: true, decompiled_smart_contracts: #Ecto.Association.NotLoaded<association :decompiled_smart_contracts is not loaded>, fetched_coin_balance: #Explorer.Chain.Wei<0>, fetched_coin_balance_block_number: 9383953, has_decompiled_code?: nil, hash: %Explorer.Chain.Hash{byte_count: 20, bytes: <<160, 184, 105, 145, 198, 33, 139, 54, 193, 209, 157, 74, 46, 158, 176, 206, 54, 6, 235, 72>>}, inserted_at: ~U[2018-10-06 22:39:11.038238Z], names: [%Explorer.Chain.Address.Name{__meta__: #Ecto.Schema.Metadata<:loaded, "address_names">, address: #Ecto.Association.NotLoaded<association :address is not loaded>, address_hash: %Explorer.Chain.Hash{byte_count: 20, bytes: <<160, 184, 105, 145, 198, 33, 139, 54, 193, 209, 157, 74, 46, 158, 176, ...>>}, inserted_at: ~U[2018-10-06 22:39:26.617020Z], metadata: nil, name: "USD//C", primary: false, updated_at: ~U[2018-10-06 22:39:26.617028Z]}], nonce: nil, smart_contract: #Ecto.Association.NotLoaded<association :smart_contract is not loaded>, stale?: nil, token: #Ecto.Association.NotLoaded<association :token is not loaded>, updated_at: ~U[2018-10-06 22:39:11.038238Z], verified: false}, r: #Decimal<22815429936316461000985654864665862790489687604996919580988940962362139072949>, error: nil, token_transfers: [], created_contract_code_indexed_at: nil, status: :ok, logs: #Ecto.Association.NotLoaded<association :logs is not loaded>, from_address: %Explorer.Chain.Address{__meta__: #Ecto.Schema.Metadata<:loaded, "addresses">, contract_code: nil, contracts_creation_internal_transaction: #Ecto.Association.NotLoaded<association :contracts_creation_internal_transaction is not loaded>, contracts_creation_transaction: #Ecto.Association.NotLoaded<association :contracts_creation_transaction is not loaded>, decompiled: false, decompiled_smart_contracts: #Ecto.Association.NotLoaded<association :decompiled_smart_contracts is not loaded>, fetched_coin_balance: #Explorer.Chain.Wei<100078809000000000>, fetched_coin_balance_block_number: 9383953, has_decompiled_code?: nil, hash: %Explorer.Chain.Hash{byte_count: 20, bytes: <<205, 34, 114, 81, 61, 250, 91, 7, 133, 215, 163, 104, 206, 57, ...>>}, inserted_at: ~U[2019-12-18 07:46:41.614201Z], names: [], nonce: 32, smart_contract: #Ecto.Association.NotLoaded<association :smart_contract is not loaded>, stale?: nil, token: #Ecto.Association.NotLoaded<association :token is not loaded>, updated_at: ~U[2019-12-18 07:46:41.614201Z], verified: false}, old_block_hash: nil, from_address_hash: %Explorer.Chain.Hash{byte_count: 20, bytes: <<205, 34, 114, 81, 61, 250, 91, 7, 133, 215, 163, 104, 206, 57, 171, 33, 34, 53, 100, 110>>}, to_address_hash: %Explorer.Chain.Hash{byte_count: 20, bytes: <<160, 184, 105, 145, 198, 33, 139, 54, 193, 209, 157, 74, 46, 158, 176, 206, 54, 6, 235, 72>>}, uncles: #Ecto.Association.NotLoaded<association :uncles is not loaded>, created_contract_address_hash: nil, index: 36, v: #Decimal<37>, gas: #Decimal<200000>, block_hash: %Explorer.Chain.Hash{byte_count: 32, bytes: <<235, 170, 24, 140, 111, 98, 200, 66, 206, 180, 82, 132, 59, 107, 42, ...>>}, block: %Explorer.Chain.Block{__meta__: #Ecto.Schema.Metadata<:loaded, "blocks">, consensus: true, difficulty: #Decimal<2046176952729657>, gas_limit: #Decimal<9988809>, gas_used: #Decimal<4580513>, hash: %Explorer.Chain.Hash{byte_count: 32, bytes: <<235, 170, 24, 140, 111, 98, 200, 66, ...>>}, inserted_at: ~U[2020-01-30 14:06:17.945273Z], miner: #Ecto.Association.NotLoaded<association :miner is not loaded>, miner_hash: %Explorer.Chain.Hash{byte_count: 20, bytes: <<130, 155, 216, 36, 176, ...>>}, nephew_relations: #Ecto.Association.NotLoaded<association :nephew_relations is not loaded>, nephews: #Ecto.Association.NotLoaded<association :nephews is not loaded>, nonce: %Explorer.Chain.Hash{byte_count: 8, bytes: <<148, 185, ...>>}, number: 9383953, parent: #Ecto.Association.NotLoaded<association :parent is not loaded>, parent_hash: %Explorer.Chain.Hash{byte_count: 32, ...}, pending_operations: #Ecto.Association.NotLoaded<association :pending_operations is not loaded>, ...}, hash: %Explorer.Chain.Hash{byte_count: 32, bytes: <<63, 112, 71, 157, 56, 218, 85, 5, 228, 149, 49, 3, 149, ...>>}, gas_price: #Explorer.Chain.Wei<5000000000>, earliest_processing_start: nil}}, topic: "transactions:new_transaction"}
State: %Phoenix.Socket{assigns: %{locale: "en"}, channel: BlockScoutWeb.TransactionChannel, channel_pid: #PID<0.9627.0>, endpoint: BlockScoutWeb.Endpoint, handler: BlockScoutWeb.UserSocket, id: nil, join_ref: "9", joined: true, private: %{log_handle_in: :debug, log_join: :info}, pubsub_server: BlockScoutWeb.PubSub, ref: nil, serializer: Phoenix.Socket.V2.JSONSerializer, topic: "transactions:new_transaction", transport: :websocket, transport_pid: #PID<0.8221.0>}

You should transfer conn param in every render of "_tile.html" of TransactionView