Merge branch 'release/1.0.0beta2' into develop
README: Fix HTML encoding issue.

It turns out that the wiki looks broken when you preview an edit without
doing HTML character encodings, yet once you actually save the update it
only looks correct when you use literal characters instead of the
encodings.
Tweak impact diagram.
Add device loader to fix batchload race condition.
Merge pull request #2 from zenoss/feature/deviceloader

Please review branch feature/deviceloader
Ignore events for irrelevant object types.

Fixes ZEN-8273.
Merge pull request #3 from zenoss/feature/ZEN-8273

Please review branch feature/ZEN-8273
Handle model update events in unexpected order.

Beta tester ran into an issue where vbd information would occur before
the VMs in which they're contained.
Version 1.0.0beta2 -> 1.0.0beta3.
Merge branch 'release/1.0.0beta3'