Add basics for contribution details

Route, controller, links, selected property/styles, etc.

app/components/contributor-list/component.js

@@ -7,6 +7,7 @@ export default Component.extend({
 
   tagName: 'table',
   classNames: 'contributor-list',
+
   selectedContributorId: null,
 
   actions: {

app/components/contributor-list/template.hbs

@@ -1,8 +1,7 @@
 <tbody>
   {{#each contributorList as |c|}}
-    <tr role="button"
-        class="{{if (is-current-user c.contributor) "current-user"}} {{if (eq c.contributor.id selectedContributorId) "selected"}}"
-        {{action "openContributorDetails" c.contributor}}>
+    <tr role="button" {{action "openContributorDetails" c.contributor}}
+        class="{{if (is-current-user c.contributor) "current-user"}} {{if (eq c.contributor.id selectedContributorId) "selected"}}">
       <td class="person">
         {{user-avatar contributor=c.contributor}} {{c.contributor.name}}
       </td>