updated to angular 9

Merge pull request #11 from FabianGosebrink/dependabot/npm_and_yarn/client/handlebars-4.5.3

Bump handlebars from 4.2.0 to 4.5.3 in /client

changed modules in web config to fux build

finished update to asp.net core 3

update webapi to aspnet core 3.0

added new splashscreen and added windows notifications again

fixed splashscreen and modified mobile app name

added cordova res for doing icons

added small dropdown button

added better look and feel

smol changes on readme for readability

Merge branch 'master' of https://github.com/FabianGosebrink/ASPNETCore-Angular-Ngrx

updated readme

Merge pull request #9 from FabianGosebrink/update-to-latest-versions