RSA invalid long term calculation

Added key for Drehb: exportmagnitude=true, then GRC will export mags to
CSV once per day
- Fixed RSA 14 day projection calculation (Could have been causing our
sync problems, due to creating forks).  Thanks Eyes for finding this.
a.  This affects every CPID
b.  This affects the list magnitude, list magnitudecsv, list rsa, etc.
c.  The problem was due to the locktime calculation; depending on how
far back a block was solved, it corrupted the payment timespan.  We now
use 14 days as a constant throughout the program.
- Added Mining Errors to overview page to help us debug errors with the
newbie mining level.  Added list nc to help diagnose newbie mining
level.
- Added payment magnitude to list rsa.  This is only useful if you have
a magnitude > maxblocksubsidy*.90 (IE 450 today).  This shows your
adjusted lederstrumpf magnitude used in payment calculations.