Dutch language updated (2)

Why it won't work the previous time?
Added missing SHA
Update strings.js
Use correct error message when renaming/deleting folder
Unified error message function, Title cased strings
Use ERR_TYPE_* constants
Consolidate all error dialogs into new method
Title Case FILENAME and DIRECTORY_NAME
Use switch, review changes
fix extension manager unit test regressions
Merge pull request #8486 from adobe/jasonsanjose/dragdrop-test-update

fix extension manager unit test regressions
Merge pull request #8281 from githrdw/patch-2

Dutch language updated (2)
Merge pull request #8008 from SAPlayer/issue-8003

Use correct error message when renaming/deleting folder
Merge pull request #8469 from diomed/patch-5

Update strings.js
fix syntax error
Merge pull request #8489 from adobe/randy/fix-hr-strings

Fix syntax error