Fixed Typo (Boostrap -> Bootstrap) / German translation

[MoeMorox]

Farsi and Urdu might have to be changed?

[fabiomartino]

Hi
looks good!
Just missed the switch for german language into:

../src/app/shared/components/header/header.component.html around line 72
<a class="dropdown-item" href="javascript:void(0)" (click)="changeLang('de')">{{ 'German' | translate }}

and into ../src/app/app.component.ts line 10 and 13
translate.addLangs(['en', 'fr', 'ur', 'es', 'it', 'de', 'fa']);
translate.use(browserLang.match(/en|fr|ur|es|it|de|fa/) ? browserLang : 'en');

Also for each language the key/value (json) translation for 'German' is missed...

[MoeMorox]

Had the changes on disk but not commited..
Sorry for the commit mess, my dev environment of this project's embedded in another one.
Tell me if you want a clean up.

[fabiomartino]

I don't have write access to this git repo.
I only can tell that your changes looks good for that desired functionality.