summary of small updates and fixes; added more feedback to users; added drugst.one version

package-lock.json

 {
   "name": "netex",
-  "version": "1.1.15-rc7",
+  "version": "1.1.15",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "netex",
-      "version": "1.1.15-rc7",
+      "version": "1.1.15",
       "dependencies": {
         "@angular/animations": "^12.2.16",
         "@angular/cdk": "^12.2.13",

package.json

 {
   "name": "netex",
-  "version": "1.1.15-rc7",
+  "version": "1.1.15",
   "scripts": {
     "ng": "ng",
     "start:dev": "ng serve --configuration=dev",