Do not allow scaling up subordinates in machine view.

Also include a few drive by fixes to docstrings.
Merge pull request #563 from frankban/do-not-scaleup-subordinates

Do not allow scaling up subordinates in machine view.

Also include a few drive by fixes to docstrings.
Display services as pending deletion.
Add back in latestChange, but more clearly mark it as a notification.
Merge pull request #565 from huwshimi/display-services-as-deleted

Display services as pending deletion

Fixes bug #1370310: display services as pending deletion.
Merge pull request #564 from jaycee/change-notifications

Add back in latestChange, but more clearly mark it as a notification.

`latestChangeDescription` is the piece of data previously provided to the
to the template to make notifications work. Because it wasn't clear it was a notification,
it was incorrectly identified as redundant code and removed. This adds it back in,
with tests, and renames it to make its purpose clearer.