feedback credit window
updated feedback notification to include info about credit window (when appropriate)
updated BFC validation to force credit window to fall within availability window; updated BFC display in LC
Merge remote-tracking branch 'upstream/master' into feedback_for_credit_window
ensured that feedback credit window does not extend before feedback availability begins
Merge pull request #199 from kevinburleigh75/feedback_for_credit_window

Feedback for credit window