Refactor member and product scripts to use concise method definitions

- Updated all function declarations to use ES6 shorthand method syntax in member.js, member_grup.js, point_barang.js, point_skema.js, point_tipe.js, kategori.js, operator.js, produk.js, produk_grup.js, rekpos.js, satuan.js, supplier.js, and varian.js.

app/Scripts/system/chpasswd.js

@@ -14,12 +14,12 @@ var SYSChpasswdJS = {
     PHP: '',
     KODE: '',
 
-    index: function(){
+    index() {
         $('#butSave').click(() => this.proses_save());
         FoniaJS.setFocus('#LPass');
     },
 
-    proses_save: function(){
+    proses_save() {
         if ($("#LPass").val()=="") {
             FoniaJS.showInfo("Silakan masukkan password lama Anda!");
             FoniaJS.setFocus("#LPass");