Implement tax handling for branches by adding tax percent to regions, updating product sell costs, and enhancing UI for tax summaries in BranchView

backend/models/falukant/data/region.js

@@ -30,6 +30,13 @@ RegionData.init({
         allowNull: true,
         defaultValue: {}
     }
+    ,
+    taxPercent: {
+        type: DataTypes.DECIMAL,
+        allowNull: false,
+        defaultValue: 7,
+        field: 'tax_percent'
+    }
 }, {
     sequelize,
     modelName: 'RegionData',

backend/models/falukant/type/product.js

@@ -16,6 +16,17 @@ ProductType.init({
     sellCost: {
         type: DataTypes.INTEGER,
         allowNull: false}
+    ,
+    sellCostMinNeutral: {
+        type: DataTypes.DECIMAL,
+        allowNull: true,
+        field: 'sell_cost_min_neutral'
+    },
+    sellCostMaxNeutral: {
+        type: DataTypes.DECIMAL,
+        allowNull: true,
+        field: 'sell_cost_max_neutral'
+    }
 }, {
     sequelize,
     modelName: 'ProductType',