Add package entity. Update entities of license and software. Add forms for package. Update another forms.
Update entities and tables
Merge remote-tracking branch 'origin/master'

Conflicts:
	src/SamDiplom/FrontendBundle/Entity/License.php
	src/SamDiplom/FrontendBundle/Entity/Software.php
	src/SamDiplom/FrontendBundle/Resources/views/Default/notification.html.twig