Today I managed to update, correct and sort the Dutch language file and wiki toolbar lang file.

+nl.yml+ (from r2230)

corrected:

• date format from 12 hour clock to 24 hour clock (several places)
• removed space, it is a grammatical error (several places)
• active_record_error_greater_than_start_date to proper Dutch ;) said: "higher than" now it says the date should be after the start date
• activerecord_error_wrong_length said: "the wrong length" changed to "an incorrect length"
• error_can_t_load_default_data added "De " to make a proper full sentence out of it
• field_fixed_version for some reason the translation was confusing
• field_start_date improved clarity of field's purpose
• label_board_plural replaced with more common and equally allowed plural
• label_issue_tracking introduced hyphen, actually should remove space but the hyphen is allowed for clarity
• label_me said: "I", but "me" in Dutch is "mij"
• label_registration_manual_activation corrected literal translation to more common one
• setting_enabled_scm was literal translation from English and looked awkward
• setting_issue_list_default_columns corrected translation error
• setting_login_required replaced abbreviation with full words
• setting_repositories_encodings
• status_active should be all lowercase, like in other language files

translated:

• button_annotate
• label_example
• label_updated_time_by had to change the word order to make a proper sentence, seems to work fine so far...
• label_user_activity
• any untranslated permission labels
• setting_plain_text_mail
• text_diff_truncated
• text_issue_added and text_issue_updated completed translation
• text_repository_usernames_mapping
• warning_attachments_not_saved

removed:

• text_coma_separated when correcting it to text_comma_separated a duplicate value would occur

+jstoolbar-nl.js+ (from r2099)

Complete translation