Merge branch 'increase-db-pool-size' into 'master'

Increase database pool size from 5 to 6

See merge request !264

database.yml.example

@@ -2,12 +2,12 @@ development:
   adapter: postgresql
   encoding: unicode
   database: gitlabhq_development
-  pool: 5
+  pool: 6
   host: /home/git/postgresql
 test: &test
   adapter: postgresql
   encoding: unicode
   database: gitlabhq_test
-  pool: 5
+  pool: 6
   host: /home/git/postgresql