added two new accessor functions, force_label to force a label to be printed by the chromosome object and link to store a URI assoicated with teh object
added two new accessor functions, force_label to force a label to be printed by the chromosome object and link to store a URI assoicated with teh object

asherkhb/coge,LyonsLab/coge,asherkhb/coge,asherkhb/coge,LyonsLab/coge,LyonsLab/coge,asherkhb/coge,asherkhb/coge,asherkhb/coge,asherkhb/coge,LyonsLab/coge,asherkhb/coge,LyonsLab/coge,LyonsLab/coge,LyonsLab/coge,asherkhb/coge,LyonsLab/coge,LyonsLab/coge