added constraint violation exception
change name of role to unique
added unique constraint violation exception
refactored role controller arguments validation
added show error for failed request -> non unique
added show error for failed request -> non unique
added translation key and removed unused file
fixed file header
added role create command
added role creation command test
added role to user create command and refactored dialog helper to question helper
added role creation to build
added changelog line and upgrade line
fixed code style
fixed code style
corrected some texts
Merge branch 'feature/#466-role-creation-command' into develop