Search UI complete (#3)

"Back" doesn't preserve search results; need to fix that before this is done

src/JobsJobsJobs/Client/Shared/Collapsible.razor.css

@@ -0,0 +1,16 @@
+a.jjj-c-collapsed,
+a.jjj-c-open {
+  text-decoration: none;
+  font-weight: bold;
+  color: black;
+}
+a.jjj-c-collapsed:hover,
+a.jjj-c-open:hover {
+  cursor: pointer;
+}
+.jjj-c-collapsed::before {
+  content: '\2b9e \00a0';
+}
+.jjj-c-open::before {
+  content: '\2b9f \00a0';
+}