Bug: cannot .replace() a component that has an abstract base class

[Eugeny]

ng-mocks is checking the decorators and will fail if there's both @Component and @Injectable present. Instead, it should ignore @Injectable if there's @Component or @Directive present.

@Injectable is required on base component classes to avoid the Class is using Angular features error when inheriting, for example:

@Injectable()
abstract class Base {
	ngOnInit () {} 
}

@Component({...})
class Component extends Base {}