Updated Dutch language file. See forum topic: http://www.webtrees.net/index.php/en/forum/8-translation/27722-no-space-in-dutch-age-67years#42652
Merge pull request #40 from JustCarmen/wt-lang

Updated Dutch language file.
Proposed fixes to sitemap.php

1. Explicitly set the action parameter for the form.
2. WT_Filter::postBool returns null if the posted variable doesn't exist
(I can't see why this happens) which is the case if the checkbox is
unchecked. This then means that WT::Tree->preference does a get not a
set.
3. When setting a gedcom preference, although the database was updated
the cached value wasn't
My modules and other changes

Administrator utilities
Improved media viewer
Enhanced "On this day" module
Changes log enhancement
Provide unified before/after display of changes
Shared notes shifted style from inline to css and added styles for
shared notes to all themes
reinstated custom js module - deleted module in error
Replacement for gedcom_news module
Utility module fix bug that removed leading \ character in path
Utility module improve content of email message by using
WT_Mail::auditFooter
Implemented sitemaps
Added custom 404 file