Fix unicode characters in ca and domain adders

Topology graph didn't show plus icons correctly.

There is a problem with uglifying of javascript code. It does not leave unicode character
written in hexadecimal format unchanged. Therefore this workaround which inserts
needed character using Javascript function and uglifiyng does not affect it.

https://fedorahosted.org/freeipa/ticket/6175

Reviewed-By: Martin Basti <mbasti@redhat.com>

install/ui/src/freeipa/topology_graph.js

@@ -530,12 +530,14 @@ topology_graph.TopoGraph = declare([Evented], {
 
         function add_labels(type, color, adder_group) {
             var label_radius = 3;
+            var decimal_plus = parseInt('f067', 16); // Converts hexadecimal
+            // code of plus icon to decimal.
 
             var plus = adder_group
                 .append('text')
                 .classed('plus', true)
                 .classed(type + '_plus', true)
-                .text('\uf067');
+                .text(String.fromCharCode(decimal_plus));
 
             var label = adder_group.append('path')
                     .attr('id', type + '_label');