Cleaning up a few persistent errors in the apache error log.
Merge pull request #260 from TheMightyBuzzard/errors

Cleaning up a few persistent errors in the apache error log.
use subscribe_low_val var
wrap purchase with user check.

Do not show when an admin is editing another user’s subscription prefs.
syntax error fixes
Merge remote-tracking branch 'upstream/master' into subscriptions

merging TMB's code to clean up apache logs.