GUI2 Bug fixes to Topo view

Change-Id: Ib40279fec94ffecb1d6c771aa376ad1cded03c02
diff --git a/web/gui2-topo-lib/projects/gui2-topo-lib/src/lib/layer/mapsvg/mapsvg.component.html b/web/gui2-topo-lib/projects/gui2-topo-lib/src/lib/layer/mapsvg/mapsvg.component.html
index cc2a794..d400ad5 100644
--- a/web/gui2-topo-lib/projects/gui2-topo-lib/src/lib/layer/mapsvg/mapsvg.component.html
+++ b/web/gui2-topo-lib/projects/gui2-topo-lib/src/lib/layer/mapsvg/mapsvg.component.html
@@ -14,7 +14,7 @@
 ~ limitations under the License.
 -->
 <svg:desc xmlns:svg="http://www.w3.org/2000/svg">Map of {{map.id}} in SVG format</svg:desc>
-<svg:path class="topo-map"
+<svg:path id="bgmap" class="topo-map"
         *ngFor="let f of geodata?.features"
         xmlns:svg="http://www.w3.org/2000/svg"
         [attr.d]="pathGenerator(f)">