Support apps using truffle 4

[macor161]

aragon run currently breaks with apps using truffle 4. It should probably support those projects.

[0xGabi]

Can you share which app. I test it on the old boilerplates and it worked for me 🤔

[macor161]

Maybe it's only a problem on my laptop. I tested all the open enterprise apps: http://github.com/autarkLabs/open-enterprise
Will try again today on a clean vm.
I seemed to use truffle 5 instead of the locally installed truffle.
E.g. on the address-book app I get the following error:

Error: Truffle is currently using solc 0.5.12, but one or more of your contracts specify "pragma solidity 0.4.24".
Please update your truffle config or pragma statement(s).
(See https://truffleframework.com/docs/truffle/reference/configuration#compiler-configuration for information on
configuring Truffle to use a specific solc compiler version.)

Truffle v5.1.4 (core: 5.1.4)
Node v10.17.0

[0xGabi]

I think it might be the truffle-config file each project is using. We might need to check if they have an old truffle configuration and made some transformation