refactor(style.css): update to disable user selection

src/DigitalData.UserManager.API/ClientApp/user_manager_ui/src/styles.scss

@@ -2,6 +2,13 @@
 @import '../node_modules/@angular/cdk/overlay-prebuilt.css';
 @import "../node_modules/bootstrap-icons/font/bootstrap-icons.css";
 
+* {
+  -webkit-user-select: none; /* Safari */
+  -moz-user-select: none;    /* Firefox */
+  -ms-user-select: none;     /* Internet Explorer/Edge */
+  user-select: none;         /* Standart */
+}
+
 a {
   color: #0366d6;
 }