add high level function to update (new) tree from existing tree

[westram]

Motivation:

After calculating a new or after adding species to an existing (with external tools like RAxML), the resulting trees often have the following shortcomings:

• node information (groups) have been removed / are missing
• the root of the differs from input or similar
• same for branch order

Functions to fix these things exist in ARB or are planned (#449), but they have to be applied in certain order to lead to good results.

Plan:

Provide a function to update tree NEW from tree OLD:

1. sync root (requires #449)
2. move groups (OLD→NEW)
3. beautify NEW according to OLD

Allow to (de-)select 1.-3. separately.

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Allow to apply this feature via CLI:

• separate needed code from ARB GUI
• needed parameters:
  • names of source- and dest-
  • add. parameters (probably) added with #512

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requires: #449, #451, #512 (implies #735)