Update video esercizio e vari bugfix
Empty library
Bugfix CSS
Merge remote-tracking branch 'origin/gianlu_dev' into marco_dev
Background image random
Merge remote-tracking branch 'origin/gianlu_dev' into marco_dev

Conflicts:
	app/View/Exercises/view.ctp
merge view.cpt
Merge remote-tracking branch 'origin/gianlu_dev' into marco_dev
Merge remote-tracking branch 'origin/gianlu_dev' into marco_dev
Merge remote-tracking branch 'origin/gianlu_dev' into marco_dev
fix vari di stile
...
Merge remote-tracking branch 'origin/gianlu_dev' into marco_dev
contenuti testuali e fix stile
Merge remote-tracking branch 'origin/gianlu_dev' into marco_dev
allineamento su exercise
Merge branch 'marco_dev' of https://github.com/minimalifestyle/L-Pack into gianlu_dev

Conflicts:
	app/View/Exercises/video.ctp
fix vari
fix vari
fix adesso non viene più proposto di salvare un record vecchio