Async terminal.

[iberdinsky-skilld]

1. Parallel runs not supported yet
2. Errors not supported yet.
3. Old logs and launched actions IDs stored in sessionStorage of browser.

[davidferlay]

• [ ] Attempt (with incorrent env value) failed but didn't say why:
• [x] Would be great for this icon to flash when a new action starts (only for a few sec, so that user know where to put his attention)
• [x] Would be great to have more sexy styles in column form:
• [x] Would be great for user to have ability to resize width of column with mouse
• [x] Since "flow" UI is working, I suggest to make it default home page
• to have link to access standard list in menu (which will not be used much)