Add missing translations for picture related keys

The following keys dont have a translation:
label.picture.info
label.picture.views.info
label.picture.views.info.colorSpace
label.picture.info.colorSpace
label.picture.views.info.depth
label.picture.info.depth
label.picture.views.info.width
label.picture.info.width
label.picture.views.info.format
label.picture.info.format
label.picture.views.info.height
label.picture.info.height
label.diffBlock.thumbnail
label.thumbnail.thumbnail
label.diffBlock.documenttemplate
label.documenttemplate.templateName
label.documenttemplate.templateData