Add ContactNumber, TypeOfNumber and Address model
Fix problems with accepts_nested_attributes using inherince
Add migration role
Add contact number and type number models, views and controller
Generate Institutions and HerarchyOfInstitutions model
Add json to expose the name of institutions
Add autocomplete schools
Add complete register of students.
Fix the students issue STI
Fix student css, add routes to accept any type of role.
Fix some bugs and adapting the themes.