[CORL-263, CORL-225] Story Titles, Moderate Story, Mini Unit (#2294)

* feat: show story title + moderate this story link

* feat: introduce mini unit

* test: add tests for moderate story link

* fix: snapshot

* fix: lint / test

* fix: unwanted margin

src/core/client/ui/theme/variables.ts

@@ -73,8 +73,8 @@ const variables = {
     },
   },
   /* gitter and spacing */
-  spacingUnitSmall: 5,
-  spacingUnitLarge: 10,
+  miniUnitSmall: 4,
+  miniUnitLarge: 8,
   /* Borders */
   roundCorners: "2px",
   /* Typography */