Variable: removed __user.name/___.user.email from global variables and added docs for the rest of the __user variable. (#25275)

* added docs for new global variable.

* reverting the name + email so we only expose the bare minumum that should be enough for most cases.

public/app/core/services/context_srv.ts

@@ -15,8 +15,6 @@ export class User {
   timezone: string;
   helpFlags1: number;
   lightTheme: boolean;
-  name?: string;
-  email?: string;
   hasEditPermissionInFolders: boolean;
 
   constructor() {

public/app/features/templating/variable_srv.ts

@@ -73,9 +73,7 @@ export class VariableSrv {
         });
         this.templateSrv.setGlobalVariable('__user', {
           value: {
-            name: contextSrv.user.name,
             login: contextSrv.user.login,
-            email: contextSrv.user.email,
             id: contextSrv.user.id,
             toString: function() {
               return this.id;

public/app/features/variables/state/actions.ts

@@ -104,9 +104,7 @@ export const completeDashboardTemplating = (dashboard: DashboardModel): ThunkRes
     });
     templateSrv.setGlobalVariable('__user', {
       value: {
-        name: contextSrv.user.name,
         login: contextSrv.user.login,
-        email: contextSrv.user.email,
         id: contextSrv.user.id,
         toString: function() {
           return this.id;