Messages after translation of non existing object (video, exercises, people) already translated.
The < that left is added
Spelling. T deleted.
Translation of key words in hints done
Names of the badge's categories
Leerling, now it's singular.
translation of the search of the matching videos
search button
Merge branch 'master' of https://github.com/PerceptumNL/KhanLatest

Conflicts:
	khan-exercises/khan-exercise.js
Merge branch 'master' of https://github.com/PerceptumNL/KhanLatest