static void FillCategory(SQLiteConnection db, JToken categoryJson, string categoryId)
        {
            var category = new CategoryTable {
                Id     = categoryId,
                Name   = categoryJson [JsonAttributes.CategoryFields.Name].ToString(),
                Theme  = categoryJson [JsonAttributes.CategoryFields.Theme].ToString(),
                Solved = categoryJson [JsonAttributes.CategoryFields.Solved].ToString(),
                Scores = categoryJson [JsonAttributes.CategoryFields.Scores].ToString()
            };

            db.Insert(category);
        }
 static void FillCategory(SQLiteConnection db, JToken categoryJson, string categoryId)
 {
     var category = new CategoryTable 
     {
         _id = categoryId,
         name = categoryJson[JsonAttributes.CategoryFields.Name].ToString(),
         theme = categoryJson[JsonAttributes.CategoryFields.Theme].ToString(),
         solved = categoryJson[JsonAttributes.CategoryFields.Solved].ToString(),
         scores = categoryJson[JsonAttributes.CategoryFields.Scores].ToString()
     };
     db.Insert(category);
 }