Add manifest.json
Merge branch 'master' of https://github.com/easygenerator/personalized-learning

Conflicts:
	settings/js/vendor.min.js
	settings/settings.html
Add manifest.json to built
Change previewImages/previewSummaryView.png
Change image to thumbnail (manifest.json)
Merge branch 'master' of https://github.com/easygenerator/personalized-learning
Update preview image
Improvements
Merge pull request #43 from LeonidPelyhivskyi/master

Redesign templates settings (Reviewed)