Force kill window manager if it hangs

Sometimes the window manager hangs and blocks the UI automation. Now the
window manager process will be force killed if it does not terminates in
30 seconds.

Also improve logging to show the window manager command as a string.
Merge pull request #1426 from elyezer/force-wm-kill

Force kill window manager if it hangs
Added test for lifecycle-environment paths

"Added test for lifecycle-environment paths"
Merge pull request #1420 from tkolhar/test_cli

Added test for lifecycle-environment paths
Removed references to `omaciel`.

Since we've moved the project to the `SatelliteQE` organization, I have
updated references to `omaciel/robottelo`.
Merge pull request #1434 from omaciel/update-index

Removed references to `omaciel`.
Fix a name clash

Rename class attribute `Media.path` to `Media.path_`. This prevents the
attribute from conflicting with the method of the same name.

Fix #1429.
Merge pull request #1432 from Ichimonji10/name-conflict

Fix a name clash
Remove references to non-existent modules
Merge pull request #1433 from Ichimonji10/sphinx

Remove references to non-existent modules