rename all variants of naming that hold an AyaType value to "aType" (parameter) / "AType" (not parameter) everywhere front and back; "ayType", "objectType", "oType" all are used in various areas

server/AyaNova/models/FileAttachment.cs

@@ -21,7 +21,7 @@ namespace AyaNova.Models
         [Required]
         public long AttachToObjectId { get; set; }
         [Required]
-        public AyaType AttachToObjectType { get; set; }//int
+        public AyaType AttachToAType { get; set; }//int
         [Required]
         public string StoredFileName { get; set; }
         [Required]