marker-icon.svg.template: remove (use inline svg symbol instead)

Remark: currently the marker is used in:
- search.js
- distance-to-portal.user.js
- draw-tools.user.js

code/boot.js

@@ -103,6 +103,14 @@ window.setupStyles = function() {
 
 window.setupIcons = function() {
   $(['<svg>',
+      // search.js, distance-to-portal.user.js, draw-tools.user.js
+      '<symbol id="marker-icon" viewBox="0 0 25 41">',
+        '<path d="M1.36241844765,18.67488124675 A12.5,12.5 0 1,1 23.63758155235,18.67488124675 L12.5,40.5336158073 Z" style="stroke:none;" />',
+        '<path d="M1.80792170975,18.44788599685 A12,12 0 1,1 23.19207829025,18.44788599685 L12.5,39.432271175 Z" style="stroke:#000000; stroke-width:1px; stroke-opacity: 0.15; fill: none;" />',
+        '<path d="M2.921679865,17.8803978722 A10.75,10.75 0 1,1 22.078320135,17.8803978722 L12.5,36.6789095943 Z" style="stroke:#ffffff; stroke-width:1.5px; stroke-opacity: 0.35; fill: none;" />',
+        '<path d="M19.86121593215,17.25 L12.5,21.5 L5.13878406785,17.25 L5.13878406785,8.75 L12.5,4.5 L19.86121593215,8.75 Z M7.7368602792,10.25 L17.2631397208,10.25 L12.5,18.5 Z M12.5,13 L7.7368602792,10.25 M12.5,13 L17.2631397208,10.25 M12.5,13 L12.5,18.5 M19.86121593215,17.25 L16.39711431705,15.25 M5.13878406785,17.25 L8.60288568295,15.25 M12.5,4.5 L12.5,8.5" style="stroke:#ffffff; stroke-width:1.25px; stroke-opacity: 1; fill: none;" />',
+      '</symbol>',
+
       // Material Icons
 
       // portal_detail_display.js

code/utils_misc.js

@@ -444,18 +444,14 @@ window.clampLatLngBounds = function(bounds) {
   return new L.LatLngBounds ( clampLatLng(bounds.getSouthWest()), clampLatLng(bounds.getNorthEast()) );
 }
 
-window.getGenericMarkerSvg = function(color) {
-  var markerTemplate = '@@INCLUDESTRING:images/marker-icon.svg.template@@';
 
-  return markerTemplate.replace(/%COLOR%/g, color);
-}
 
 window.getGenericMarkerIcon = function(color) { // used in draw-tools
   color = color || '#a24ac3';
   return L.divIcon({
     iconSize: [25, 41],
     iconAnchor: [12, 41],
-    html: getGenericMarkerSvg(color),
+    html: '<svg width="25px" height="41px" style="fill: ' + color + '"><use xlink:href="#marker-icon"/></svg>',
     className: 'leaflet-div-icon-iitc-generic-marker', // actually any name, just to prevent default
                                                        // (as it's inappropriately styled)
     // for draw-tools: