learningequality/ka-lite — pull request #2146 by aronasorman (2014-06-06 21:14:09+00:00)
Title: Tweaks to make the update process smoother

Two changes:
1. Update the BUILD_ID whenever we start/restart the server
2. Clear the UpdateProgressLog whenever we initiate the update process.

Changes are local and easy to read, separated by commit.

@jamalex @rtibbles if either of you have time to review today, please do so. Both changes have been tested.