Working on connection notes
Working on generalizing note gui element
Reformat
Reformat
Fix note display problem
Fix unit tests
Add connection notes. Placement needs fix
Extract class
Improve positioning of connection notes

Still don't move with connection. Need a separate signal slot from scene
Connection note position updated, but needs better positioning
Fix some lifetime bugs
Clean up
Disable connection note positioning option for now
Move code. Closes #242
Merge branch 'gui_I'