1. alert.ts: Added previous button option.
2. composer.ts: Set feedback values in body | Make method "composeEmailForSdgsSuggestion()" generic to send feedback for either SDGs or FoS. - TODO: Rename method.
3. sdg-selection.component: Added some checks | Added method "getSelectedSubjects()".
4. sdg-fos-suggest.component: Updated component for suggestion | Send suggested subjects to composer | Add modal here | Make file generic for FoS or SDGs suggestion.
5. resultLanding.component: Updated how <sdg-fos-suggest> is called | Moved SDGs / FoS suggest modal inside <sdg-fos-suggest>.