Small tweaks for adding a new application member:

- raise specific invitation type if invite not found in invitation domain classes
- more terse assignments of defaults in invitation service, smh
- terser margin expression for inline input fields
- sass formatting
- use translation for cancel link
- oxford comma for app team management permission explanation
- do not format environment roles with hyphens for role selection
- generalize some additional methods in the invitation domain base class
- use plain atst.models import path

atst/routes/task_orders/invitations.py

@@ -57,7 +57,7 @@ def resend_invite(task_order_id):
     if not officer:
         raise NotFoundError("officer")
 
-    invitation = PortfolioInvitations.lookup_by_portfolio_and_user(portfolio, officer)
+    invitation = PortfolioInvitations.lookup_by_resource_and_user(portfolio, officer)
 
     if not invitation:
         raise NotFoundError("invitation")