Merge branch 'v2' into market/contract

Renamed AssetPrice.platform -> AssetPrice.ico_price

wallet/v1/msg.proto

@@ -101,7 +101,7 @@ message Asset {
   string image = 8;
   string description = 9;
   string url = 10;
-  int64 buy_unit_price = 11;
+  // int64 buy_unit_price = 11;
   double buy_min_amount = 12;
   double buy_max_amount = 13;
   bool is_active = 20;
@@ -190,7 +190,7 @@ message AssetDiscountRes {
 message AssetPrice {
   string updated_at = 1;
   double market_price = 2;
-  double platform_price = 3;
+  double ico_price = 3;
 }
 
 message GetAssetReq {