#4 Added Select2 lib
#4 added dropdown with schools to registration form
#4 added placeholder for school select
#4 edited text of placeholder for school select
#4 school list is now sorted alphabetically
#4 Code style improvements
#4 added school id field to model
#4 Implemented setting school ID
Merge branch 'issue_4' of https://github.com/uaoleg/icpc.org.ua into issue_4
#4 Code style improvements
Merge branch 'issue_4'