Nuxeo server panel

Not sure if you're still working on this but i've been trying to switch to IDEA as my main IDE and it would be nice to add at least a couple more things to the plugin to bring it up to par with Nuxeo IDE.

This PR is just a couple of changes i've done to the plugin so it can just be used for discussing if this sort of thing should be merged. I can clean it up and open a new PR.

Basically I:
- Added missing action icons.
- Switched to make instead of compile.
- Started work on Nuxeo server panel.