Import date-fns functions from their separate files. Avoids Webpack i…

…mporting everything causing bloat.

components/x-teaser-timeline/src/lib/date.js

@@ -1,4 +1,8 @@
-import { format, isAfter, differenceInCalendarDays, subMinutes } from 'date-fns';
+// TODO: import from main date-fns entry point once ft-app is no longer using Webpack 1.
+import differenceInCalendarDays from 'date-fns/difference_in_calendar_days';
+import format from 'date-fns/format';
+import isAfter from 'date-fns/is_after';
+import subMinutes from 'date-fns/sub_minutes';
 
 /**
  * Takes a UTC ISO date/time and turns it into a ISO date for a particular timezone