Revert "Made ModellerHelper use Bootstrap directly to avoid logging initializaiton."

This reverts commit 7dfd81ff4a7a0bba7a5ada3693e734f575827387.
Revert "Moderated logging to make launching DC possible from a unittest"

This reverts commit 24f567c6d97563a0c66e727af54c562ecc1c7321.
Minor code style fix