Increase emails recieved at a time to 200.

Get DEBUG logging.
Bump email checks to every 90 sec.
Check email every 60 seconds.
Get more messages at a time.
Delete non-bugmail.
Drop bugmail back to normal levels.
Fix some code typos
Add is_weekday() function
Use DAY constant
Round up fractional ideal points to avoid fractional point tooltips.
Add "points" units to burndown tooltips.