LDEV-1481 Migrate activities from removed sequence to the default Sequence (removed via start branch connector removal) and also improvements for setting the default sequence activity title for a new Branch.
LDEV-1482 Fixed problem with transition removal caused by problem with comparison in refreshDesign method. Leave out keys of transitions between activities in an optional sequence.
LDEV-1499 Show tool activities within branches but not grouping activities. If branching activity is inside a sequence check parents and downstream from parent. same for grouping activities.