Revised the wording of the ones for membership. These are very MHV specific, should we have more general ones on github and 'local' ones for us?
Do we need different templates for each expiring product, or could the template grab the product type?
step towards issue #12
Split out the different expiring member products
Merge the legacy and new membership expiry
Updated reminders logic to support all 3 expiry types
fixed 'NoneType has no attribute today' error
Merge pull request #18 from makehackvoid/update-emails-issue12

Update reminder emails (fixes #12)