Fix optimize flag handling

Fix click handler for warnings/errors

Fix gather imports

Fix execution context change (Web3 & RPC)

Resolve the confusing behaviour of QueryParams

Update ballot contract to solidity 0.4.0.

This wasn't fully working and would create a complex code (at least now)

Compile button and option to disable automatic compilation

Load versions from list.json

Display warnings even if there were no errors

Cleanup compiler load events

Parse source into json for event.