Change database structure for group creation
Save keyword list screen into special view
Change keyword configuration view to keyword group configuration view
Add KeywordGroupCreationForm
Add keyword_group loop type
Creation keyword group creation route
Add KeywordGroup creation & update actions
Add association management between keyword and group
Start of delete event management on keyword group
Better managment of list view + better delete keyword managment
Better management of error message display and redirections + better breadcrumb display
Add visibilityToggle & position actions managment on groups
Delete useless file
New translation system use
PSR respect
Update documentation