npm packages prüfen

• 42 vulnerabilities (1 low, 11 moderate, 29 high, 1 critical)
• Warning: C:\Users\Micha\git\gitsearch\src\main\webapp\app\teaserContent\teaserContent.component.ts depends on 'ts-color-class'. CommonJS or AMD dependencies can cause optimization bailouts. For more info see: https://angular.io/guide/build#configuring-commonjs-dependencies

created branch 398-npm-packages-prufen to address this issue

mentioned in merge request !192 (merged)