Update nl.js

Line 178 misses a comma in the Json string the bug should be fixed by TinyMCE.
Merge pull request #3439 from infazse/patch-2

Update nl.js
[fix]Save ordering when add language during Joomla multilang install
(Fix #3428)
Adding en-CA and fr-CA languages in installation.
Adding Canadian and Quebec flags
Changes
Plugin added again