Bump counter_culture from 1.8.2 to 1.9.0 (#293)

Bumps [counter_culture](https://github.com/magnusvk/counter_culture) from 1.8.2 to 1.9.0.
- [Changelog](https://github.com/magnusvk/counter_culture/blob/master/CHANGELOG.md)
- [Commits](magnusvk/counter_culture@v1.8.2...v1.9.0)

Gemfile.lock

@@ -134,7 +134,7 @@ GEM
     coffee-script-source (1.12.2)
     concurrent-ruby (1.0.5)
     connection_pool (2.2.1)
-    counter_culture (1.8.2)
+    counter_culture (1.9.0)
       activerecord (>= 3.0.0)
       activesupport (>= 3.0.0)
       after_commit_action (~> 1.0)