Shorten display of large numbers on public profiles (#4711)

config/locales/en.yml

@@ -353,6 +353,17 @@ en:
     reblog:
       body: 'Your status was boosted by %{name}:'
       subject: "%{name} boosted your status"
+  number:
+    human:
+      decimal_units:
+        format: "%n%u"
+        units:
+          billion: B
+          million: M
+          quadrillion: Q
+          thousand: K
+          trillion: T
+          unit: ''
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