Solidity compiler tab should not present warnings as errors

[axic]

See ethereum/solidity#2610.

If using the old compiler interface, each error message needs to be checked if it contains Warning:.

Using the new compiler interface (solc.compileStandardWrapper()) the severity is available as a field. See https://solidity.readthedocs.io/en/develop/using-the-compiler.html#compiler-input-and-output-json-description.

[jklepatch]

I can work on that one.
Is this the right place to start ?
https://github.com/ethereum/mist/blob/develop/modules/ipc/methods/eth_compileSolidity.js

[ghost]

This issue was moved by @evertonfraga to ethereum/meteor-dapp-wallet/issues/458.