CLI: Moves Commands Around

* Moves `cci network` to `cci nic-edit`
* Implements the confirmation prompts for power-off/pausing/reboot
* Moves `cci manage` to pause, power-off, power-on, reboot, resume

This should be attached to issue #144
CLI: Moves `server network` to `server nic-edit`
CLI: Fixes test for NicEditServer
Merge pull request #163 from sudorandom/issue-144

More on Issue 144