Enhancement: support disable release checking

docs/configs/settings.md

@@ -402,7 +402,7 @@ quicklaunch:
   suggestionUrl: https://ac.ecosia.org/autocomplete?type=list&q=
 ```
 
-## Homepage Version
+## Homepage Version & Update Checking
 
 By default the release version is displayed at the bottom of the page. To hide this, use the `hideVersion` setting, like so:
 
@@ -410,6 +410,12 @@ By default the release version is displayed at the bottom of the page. To hide t
 hideVersion: true
 ```
 
+You can disable checking for new versions from GitHub (enabled by default) with:
+
+```yaml
+disableUpdateCheck: true
+```
+
 ## Log Path
 
 By default the homepage logfile is written to the a `logs` subdirectory of the `config` folder. In order to customize this path, you can set the `logpath` setting. A `logs` folder will be created in that location where the logfile will be written.