alignment admin should also modify SAIs

[epruesse]

When copying, deleting, renaming, formatting or checking for length, the SAIs should also be updated.

For copy/delete/rename, this amounts to doing to <SAI>/ali_xxx exactly what's done to <species>/ali_xxx. For formatting and length changes it's a bit more difficult with "complex" SAIs such as the posvar SAIs.

On that note: how are posvar SAIs treated by insert/delete-column?

[westram]

Replying to epruesse:

On that note: how are posvar SAIs treated by insert/delete-column?

Should work correctly. ​Tests exist also for INT- and FLOAT-ARRAYs. I just checked behavior with the browser (looking at "/extended_data/extended[3]/ali_16s/FREQUENCIES/NA"): content moves by 4 byte (=size of int in )