Google Analytics does not show in Admin => Tool Settings. Also, Google Analytics gadget is missing in CMS.

The virtual roles GoogleAnalyticsReaders and GoogleAnalyticsAdministrators to authorize editors to the gadget and administrators to the administrative interface. Please add this in <virtualRoles> section of <episerver.framework> config:

<add name="GoogleAnalyticsReaders" type="EPiServer.Security.MappedRole, EPiServer.Framework" roles="WebAdmins, Administrators, <your active directory group>" mode="Any" />
<add name="GoogleAnalyticsAdministrators" type="EPiServer.Security.MappedRole, EPiServer.Framework" roles="WebAdmins,Administrators,<your active directory group>" mode="Any" />