Relevant files for managing the mapId hash in the URL:


templates/ideatree/map_page.html:      <script defer id="mapHashScript" src="{% static 'ideatree/js/minified/rewriteHashToURL.min.js' %}"></script>
templates/ideatree/pickmapResult.html:  <script id="mapHashScript" src="{% static 'ideatree/js/minified/rewriteHashToURL.min.js' %}"></script>

rewriteHash function moved to:
./static/ideatree/js/graphUtils.js


static/ideatree/js/rewriteHashToURL.js:        history.replaceState(stateObj, '', thehash);

OK:
static/ideatree/js/registerNavButtons.js:					history.replaceState(stateObj, '', urlMapHash);


REMOVED:
static/ideatree/js/pickMapURLmapHash.js:		if(history.replaceState) { 

REMOVED:
static/ideatree/js/writePreExistingURLMapHash.js:			history.replaceState(stateObj, '', urlMapHash);