XP and Rubies system

[Xety]

Rubies :

• Icon : fa-diamond
• Color : #F4645F
• Can only be obtened with solved answer
• Can be used to :
  • Purchase XP boosters
  • Change username

XP :

• Icon : fa-star-o
• Color : #F39C12
• Can be obtened with :
  • Solved answer : 120 XP
  • New threads : 90 XP
  • New posts : 75 XP

Preview in Discussions :

[Xety]

Table users_xp
id
user_id
amount
obtainable_type
obtainable_id
event_type
data
created_at
updated_at

Table users
xp_total -> cache
rubies_total -> cache

Table users_rubies
id
user_id
obtainable_type
obtainable_id
created_at
updated_at

[Xety]

Closed as #50 is open.