* Update and expanding Dutch strings for 1.5

Only privacy policy is not translated, but is included. Hopefully I have time to translate this another time (you can set your own privacy policy now anyway).

* Missing file

* A few changes cause of changes in another file

* Fix

* Update Dutch strings for 1.5

* nl

* fix

don't know how that ended up there

* Update nl.yml

* Fixed some words

* Improved and more consistent

* Fixes and a bit less 'je'

* Improved and more consistent

* Another round of improvements and consistency

* More improvements and less 'je'

* Update

* Updated with admin strings

* More improvements and additions - not complete yet, but most is there

* This is what we call in Dutch 'the English disease' :-)

* fix comma

* admin.reportsi

* not needed

* hopefully now fixed

* Dutch language files for Ruby code

 * Created RoR translation ymls:
   * config/locales/devise.nl.yml
   * config/locales/doorkeeper.nl.yml
   * config/locales/nl.yml
   * config/locales/simple_form.nl.yml

 * Modified RoR config and helper
   * app/helpers/settings_helper.rb
   * config/application.rb

* Dutch language javascript locale

 * Created javascript locale files:
   * app/assets/javascripts/components/locales/index.jsx
   * app/assets/javascripts/components/locales/nl.jsx

 * Reference the newly created locale files:
   * app/assets/javascripts/components/containers/mastodon.jsx

* Fix syntax error in locale file (nl)

* Fix missing translate in js locale (nl)

* Convert all ruby Dutch locale (nl) file to utf8

Fix yml conversion issues.

* Fix duplicated key in devise.nl.yml

* Fix indentation error in doorkeeper.nl.yml