seems to have fixed glaring alignment issues in chart
fix users being assigned random colours on reload; fix chart width
don't close previous versions of chart after reload; allow closing of old charts without closing application
Merge branch 'dev_branch' into dev_branch2

Conflicts:
	src/ValueChart.java
Merge branch 'dev_branch' into dev_branch2

Conflicts:
	src/ConstructionView.java
	src/ValueChart.java
	src/ValueChartsPlus.java
implement hide non-competing alternatives view
applied some refactoring from individual chart (SHA 9b909f62187c84ad3fb0ae73442b35f1530040ac)
added highlighting of criteria by weight and score variance; refactoring
fix calculation of variance by score
refactoring AttributeDomain and subclasses based on changes in individual chart
added variance heatmap by utility
Merge branch 'master' into dev_branch