1.0.0.41

Email: fix to email sending to exclude members with no email address.
Event: fixes to roles and shifts to allow members to only set up roles for volunteers.
Event: fixed Sign Up Sheet to show both volunteers for roles and shifts.
Event: added field Feature on Public Website.
Event: added automatic email to send to event creator on day of event with links to everything that can be done within the event.
Member: phone numbers in member profile were being changed to white text on Apple products.
Member: phone numbers are tappable links to dial directly.
Sponsors: added email address if sponsor is not a member of club.
Sponsors: added Member field to select if sponsor is a member of club.
Sponsors: added Website field.
Sponsorship Level: added Total Available field.