[FEATURE REQUEST] Organize contigs by length in interactive interface about anvio

[meren]

The commit af1ebd7 solves this issue.

Here is an example with the IGD (data layers are removed for simplicity).

This is the default items order based on "Seq. Composition + Diff Coverage":

And this is when one selects the new item order called <> Length which should appear in the items order menu after this commit:

The algorithm is smart and orders items by keeping in mind the length of their parents (rather than merely ordering 'splits' based on their lengths). For projects with long contigs, the length order will not break the connection between splits. It shouldn't matter for projects with shorter contigs (i.e., EcoPhylo outputs, tRNA-seq displays, etc).

[meren]

@mschecht, please make sure it is working well for you, and close the issue if there are no problems.

[mschecht]

@meren I tested this on IGD and my own data and it's performing as expected!

Thanks for the help!