Show user management only for root users
Show a confirmation dialog for user removal

- Modifies showDialod to be more useful with varying size dialogs
Fix crashes when typing backslashes to some select2 inputs
Refactor employers select2 initialization
Use a centralized date format configuration
Merge pull request #12 from kavi-fi/feature/user-management

Feature/user management
Merge branch 'master' into feature/account-management

Conflicts:
	client/js/classification.js