Update appsignal to version 0.10.6
Update newrelic_rpm to version 3.9.4.245
Update coveralls to version 0.7.1
Update better_errors to version 2.0.0
Update quiet_assets to version 1.0.3
Update rspec-rails to version 3.1.0
Fix Keyword Translator issue.

When you initialize the client, you need to pass in the application
name and version. Also, translations sometimes is an empty array, which
will pass the `nil?` test, so we should use `blank?` instead.

Also, note that if you don’t get any results for certain non-English
words, it could be because we’ve reached the daily limit, which
apparently we already have.