fixed a bug I introduced in 2e3295a that would prevent tree upload under certain circumstances (e.g. fer1 example).
Added a bit of logic that prevents MSA sequence IDs to get messed up when several trees are uploaded consecutively
Added drop import to tree example
@bene200 as said the string/integer comparison can shoot back at some point (if we change a bit of logic), but I will merge this, because it definitely a fix and improvement ;-)
fixed a bug I introduced in 2e3295a that would prevent tree upload under certain circumstances (e.g. fer1 example). Added a bit of logic that prevents MSA sequence IDs to get messed up when several trees are uploaded consecutively Added drop import to tree example