Customize Sidemenu Links

I am very new to Grafana.
I need to customize sidemenu link names and icons [dashboards, alerting, etc…] by altering the source code directly.
In this case, need help in understanding how the following is populated:
const navTree = _.cloneDeep(config.bootData.navTree);
Is the sidemenu links located in database?
From where does window.grafanaBootData is loaded?

Thanks in advance.


Same problem here!

We want to customize dropdown sidemenu names (both, top and bottom) in order to translate them. Also their corresponding page header tabs. But no way to find how.

Thanks in advance