enhancement: Change Premium system to be based around tiers so users pay for what they want.

[scottbucher]

Restructure APS & the Birthday Bot Premium system to be based around a Tier system where servers can choose to pay for what they want.

Current Systems:

• Birthday System
• Anniversary System
• Custom Events / Holidays (Coming Soon!)

Each system will have a premium version attached to it and servers can choose which they would like to pay for (so they don't have to get what they won't use!) or they can choose multiple/all for a reduced price.

Possible ways to implementation:

Each system has a premium:

• Birthday System Premium
• Anniversary System Premium
• Custom Events / Holidays (Coming Soon!) Premium
• All in one premium

Tier based (User Choice):

• Tier 1: One of the 3 systems
• Tier 2: Two of the 3 systems (x% off)
• Tier 3: All of the systems (x% off)

All current subscribers would keep their current subscription agreement as long as they meet payments, however, new subscriptions would, obviously, be in the new format discussed above.