Print Pdf, bundle install. CR: MV
Create content, bundle install, migrations. CR: MV
Fixed. add ";"  and remove line. CR= MV
Fixes:
- change "Contentido" by "Contenido" 
- remove lines 18, 19.
- remove line 364
CR = MV
Merge pull request #1 from vairix-amuhlethaler/new_branch

Print Pdf, bundle install. CR: MV
Unify flash alert, flash notice and instance variable error messages. CR = MV
Fixed:
-remove flash.now CR= MV
Merge pull request #3 from vairix-amuhlethaler/message_errors

Unify flash alert, flash notice and instance variable error messages.
Teacher Statistics
Email with statics to profesor. CR= MV
Fixes:
Email teacher statics. CR = MV
Fixes:
- Support sqlite and mysql
- adds '-' to finish line.
- remove line 153.
CR=MV
Merge branch 'email_teacher_statistics' of github.com:vairix-amuhlethaler/aprende into email_teacher_statistics

Conflicts:
	Gemfile