Change Log, 9th, November

Major changes:

1. Implemented Spanish language to the website
2. Users can check all their active orders and dealt orders in one page now
3. Added introductions for some of the coins
4. Updated KuCoin Bonus system which could dynamically increase the ratios

Minor changes:

1. Optimized market API endpoints, users can get the data filtered by markets
2. Added IP address display of current login and last login
3. Optimized the display of numbers