Dutch localization added

Added Dutch localization for ActionMenu, DeepEnd, DisplayOut. Other
Dutch localizations are coming soon. Corrected German typo DisplayOut.
More Dutch localization

Fixed typo DisplayOut. Added Dutch localization for HapticPro, Inspell,
libactivator, OverBoard, ProSwitcher, RetinaPad. More to come soon.
Merge pull request #14 from Stoppels/master

Dutch localization 3 tweaks