Removed advertising for „Internationalized Interface“

Addendum for d063b9d4db51cc2047f559c5cacbfc81c2c9a43a
Install ruby if need.
ruby 2.1.4
Updated Puma
Updated some development dependencies.
Simple command to run tests.
Bumped Rails to 4.1.7
Call 'mdash' if string to display is nil.
Removed old translation file.
namespaced translation string
typus.filters.view_all
Quick and dirty way to verify urls.
typus.dashboard translation
Missing translation.
For the moment I won't translate booleans.
Removed url which is not working.
For the moment I won't translate booleans.
Fixed bug introduced when upgrading to Rails 4.1.7
Removed search_placeholder
Updated when we raise missing translations.