Better markup and handling of "Remove current image" in media modal.

Refs #214
Dutch translation

The complete Dutch translation of Make.
Merge pull request #215 from LeoOosterloo/develop

Dutch translation!
Update readme.md

Add @LeoOosterloo to contributors for Dutch translation.
Update changelog for 1.4.4
Bump version to 1.4.4
Merge branch 'release-1.4.4' into develop
Version 1.4.4