Revert "Tentative fix: snackbar is sometimes uninitializated"

This reverts commit 8f72368309626bf9529c2d4e93d3c53e350eaa58.

Reason for revert: this change breaks the feature.

Change-Id: I53c5084a0fba30ce8974e72ee127aeb9674464a5
diff --git a/src/contentScripts/communityConsole/autoRefresh.js b/src/contentScripts/communityConsole/autoRefresh.js
index 64813e4..38e83f3 100644
--- a/src/contentScripts/communityConsole/autoRefresh.js
+++ b/src/contentScripts/communityConsole/autoRefresh.js
@@ -23,7 +23,6 @@
     this.firstCallTimeout = null;
 
     this.setUpHandlers();
-    this.injectUpdatePrompt();
   }
 
   getStartupData() {
@@ -273,6 +272,7 @@
 
     console.debug('autorefresh_list: starting set up...');
 
+    if (this.snackbar === null) this.injectUpdatePrompt();
     this.isLookingForUpdates = true;
     this.path = location.pathname;
     this.filter = this.getFilter(this.path);