Downloaded dapp set to external network won't work

[filippsen]

Environment/Browser

Lab 1.6.1.
Still valid on version 1.7.0.

Description

Downloaded Dapp includes undefined window.web3 code. This definition is unnecessary and overwrites the actual setting, making the code unable to connect to the server.

Steps to reproduce

1. Create a new project from the Hello World template
2. Set Custom network (in Select a Network button)* or any other network
3. Deploy HelloWorld.sol
4. Paste in the 12 word seed and proceed with deployment
5. Open Preview panel
6. Click Download DApp button
7. Inspect the downloaded html file

*Running a custom network:

a) Run Ganache (desktop application)
b) Go to Settings gear icon;
c) In Server settings, set Port Number to 8545;
d) In Chain settings, set Gas Limit to 7900000.
e) Click SAVE AND RESTART
f) Copy the MNEMONIC (12-word seed) shown in the ACCOUNT screen

Expected result

Expected the Hello World example to run.

Actual result

Console output:

superblocks_dapp_hello.html: Using Superblocks web3 provider for endpoint: undefined

Renders with missing arguments.

Message:
Block number: 

How to solve it

Remove the following snippet from the output:

<script type="text/javascript">
    window.web3={currentProvider:new DevKitProvider.provider("undefined"),eth:{accounts:undefined}};                                                         
    console.log("Using Superblocks web3 provider for endpoint: undefined");
</script>

[filippsen]

Resolved with request #424