Remove JRebel

No longer needed
Add Ideas List
Create Warmups, Cooldowns, and TpBlocks lists

Hopefully this will be a clean method of handling such checks
Add Back Command
Clean SQL Check in Backend

Cleaner when checking whether or not to use SQL when saving/loading data
Config option for Teleport Cooldown/Warmup
Implement Cooldowns, Warmups, and TPBlocks

Also, added related information to plugin.yml