BUg fixing for youtube video, and other tag for tablet users, minimized fil js and tutor text refactoring.
Merge pull request #399 from panseo/test

BUg fixing for youtube video, and other tag for tablet users, minimized ...
Merge remote-tracking branch 'upstream/master' into test
entire project reformatted
Merge pull request #400 from gogolander/test

code reformatted
Merge pull request #401 from Movimento5StelleLazio/test

code reformatted