create features based on graph peaks

git-svn-id: svn+ssh://svn.internal.sanger.ac.uk/repos/svn/pathsoft/artemis/trunk@7202 ee4ac58c-ac51-4696-9907-e4b3aa274f04

ChangeLog

+Version x
+
+	Added option to "Create features from graph peaks". For a graph 
+	this creates features in regions above a given cut-off and above 
+	a given feature size.
+	
 Version 10
 
 	Add redo function to 'Edit' menu. Also enable/disable undo and