PLT-2698 Integrations improvements (#2883)

* Fixed Integrations link to show up for non-admins (when enabled) and when only slash commands are enabled

* Updated BackstageSidebar to only show enabled integrations

* Added placeholder to integrations list when none exist

* Added loading spinner to integrations pages when they're loading

1 files changed, 4 insertions, 0 deletions

diff --git a/webapp/components/backstage/backstage_category.jsx b/webapp/components/backstage/backstage_category.jsx
index 913c7562c..8e6c8541b 100644
--- a/webapp/components/backstage/backstage_category.jsx
+++ b/webapp/components/backstage/backstage_category.jsx
@@ -40,6 +40,10 @@ export default class BackstageCategory extends React.Component {
                 <ul className='sections'>
                     {
                         React.Children.map(children, (child) => {
+                            if (!child) {
+                                return child;
+                            }
+
                             return React.cloneElement(child, {
                                 parentLink: link
                             });