Create nl-nl.json

Dutch locale file
Merge pull request #275 from newfield86/master

Create nl-nl.json
Small grid enhancement
Added layout.tabsShow, layout.tabsHide, layout.tabsToggle, layout.toolbarShow, layout.toolbarHide, layout.toolbarToggle methods
Recompiled JS and CSS
Fixed small PHP bug
Merge pull request #1 from vitmalina/master

Updates to latest on master