OZG-294 OZG-525 OZG-524 OZG-523 bug fixes

...e/src/integration/wiedervorlage/wiedervorlage.e2e-spec.ts

goofy-client/libs/tech-shared/src/lib/tech.model.ts

goofy-client/libs/tech-shared/src/lib/tech.util.spec.ts

goofy-client/libs/tech-shared/src/lib/tech.util.ts

...y-client/libs/tech-shared/src/lib/tech.validation.util.ts

...libs/ui/src/lib/ui/date-editor/date-editor.component.html

...s/ui/src/lib/ui/date-editor/date-editor.component.spec.ts

...t/libs/ui/src/lib/ui/date-editor/date-editor.component.ts

...rc/lib/ui/editor/formcontrol-editor.abstract.component.ts

...libs/ui/src/lib/ui/text-editor/text-editor.component.html

...s/ui/src/lib/ui/text-editor/text-editor.component.spec.ts

...t/libs/ui/src/lib/ui/text-editor/text-editor.component.ts

...src/lib/ui/textarea-editor/textarea-editor.component.html

.../lib/ui/textarea-editor/textarea-editor.component.spec.ts

...i/src/lib/ui/textarea-editor/textarea-editor.component.ts

goofy-client/libs/ui/src/lib/ui/ui.module.ts

...c/lib/ui/validation-error/validation-error.component.html

...c/lib/ui/validation-error/validation-error.component.scss

...ib/ui/validation-error/validation-error.component.spec.ts

...src/lib/ui/validation-error/validation-error.component.ts