CLC-2600 Rework FeedUpdateWhiteboard so it can work as a multi-instance message processor instead of singleton
CLC-2600 Simplify FeedUpdateWhiteboard write logic and correct it so it won't be inconsistent
Merge pull request #1636 from ctweney/clc-2600-feedwhiteboardfixes-qa

CLC-2600 (QA) Feed whiteboard fixes