Provide easier tree member comparison

[westram]

Comparing members of two or more trees currently is possible using 'ARB_NT/Species/Mark species/Species [NOT] in Tree/…'.

To perform useful comparisons these functions are too complicated and not intuitive at all, e.g.:

• "Mark species common in 2 trees":
  • select tree1, mark species not in
  • select tree2, mark species not in
  • invert marks of all species
• "Mark species unique in one of 2 trees":
  • select tree1, mark species in
  • select tree2, invert species in
• "Mark species missing in some of 3 trees":
  • … (i don't even like to think about how to do that)

Todo:

• Provide a window similar to consensus window (i.e. selected trees/all trees lists).
• Possible functions:
  • 'Mark members' (= in any of the selected trees)
  • 'Mark common species' (= in all selected trees)
  • 'Mark unique species' (= only in one of the selected trees)
  • 'Mark missing species' (= in one, but not in all selected trees)
• same for 'Unmark' + 'Invert'

[westram]

useful or useless? ideas?

[westram]

Most of it has been implemented with [13821] for #651

[westram]

mark changes that got fixed after arb 6.0.x

[westram]

Milestone renamed