fix cs violation
make the create product scenario more reliable by avoiding a check on flash
message
PIM-1245 : Fix navigation titles for channel and group edit views
PIM-1245 : Add behat features for head title of pages
PIM-1245 : Fix a behat test
PIM-836 : Create Variant controller
PIM-836 : Define variant controller as service
PIM-836 : Define variant controller routing
PIM-836 : Add variant item in enrich menu