Fix Error 500 when viewing user's personal projects from admin page

This is a regression introduced in 4d7f00fd.

Closes #3680

CHANGELOG

 Please view this file on the master branch, on stable branches it's out of date.
 
 v 8.3.0 (unreleased)
+  - Fix Error 500 when viewing user's personal projects from admin page (Stan Hu)
   - Fix: Assignee selector is empty when 'Unassigned' is selected (Jose Corcuera)
   - Fix 500 error when update group member permission
 

app/views/admin/users/_projects.html.haml

+- if local_assigns.has_key?(:contributed_projects) && contributed_projects.present?
+  .panel.panel-default.contributed-projects
+    .panel-heading Projects contributed to
+    = render 'shared/projects/list',
+      projects: contributed_projects.sort_by(&:star_count).reverse,
+      projects_limit: 5, stars: true, avatar: false
+
+- if local_assigns.has_key?(:projects) && projects.present?
+  .panel.panel-default
+    .panel-heading Personal projects
+    = render 'shared/projects/list',
+      projects: projects.sort_by(&:star_count).reverse,
+      projects_limit: 10, stars: true, avatar: false

app/views/admin/users/projects.html.haml

@@ -14,7 +14,7 @@
 .row
   .col-md-6
     - if @personal_projects.present?
-      = render 'users/projects', projects: @personal_projects
+      = render 'admin/users/projects', projects: @personal_projects
     - else
       .nothing-here-block This user has no personal projects.