confirmation modal for deleting an application

- adds delete-confirmation Vue component
- refactors some button styles to make them globally available

translations.yaml

@@ -43,6 +43,7 @@ common:
       contracting_officer: Contracting Officer
       security_officer: Security Officer
       contracting_officer_representative: Contracting Officer Representative
+  delete_confirm: "Please type the word DELETE to confirm:"
 components:
   modal:
     close: Close
@@ -599,6 +600,12 @@ portfolios:
       name: Name
       members: Members
     add_environment: Add New Environment
+    delete:
+      button: Delete Application
+      header: Are you sure you want to delete this application?
+      alert:
+        title: Warning! This action is permanent.
+        message: You will lose access to this application and all of its reporting and metrics tools. The activity log will be retained.
   admin:
     portfolio_members_title: Portfolio members
     portfolio_members_subheading: These members have different levels of access to the portfolio.