Rect elements not properly scaled

[GopiGugan]

[ArtPoon]

Just to put the above into words, the range of collection dates for this lineage does not line up with the time axis of the tree plot

[GopiGugan]

The cutoff slider does not align with the time axis of the tree plot either

[GopiGugan]

Looks like the issue with the xaxis scaling was because we were setting an interval of 365.25 days:

covizu/js/drawtree.js

Lines 163 to 167 in 4ab1ba4

	function xaxis_to_date(x, tip) {
	var coldate = new Date(tip.first_date); // collection date of reference tip
	coldate = d3.timeDay.offset(coldate, 365.25*(x - tip.x));
	return (coldate.toISOString().split('T')[0]);
	}

I've adjusted this now to use an interval based on the earliest and latest collection date of samples from all clusters in the tree

[ArtPoon]

Pending PR