Show a link to password reset from password change and delete account (#862)

It's helpful when you forgot your password thus cannot change it
(can happen if you log in via OAuth2 or OpenID)

Also make sure that both the delete-account and password-change
links to forgot-password will have the primary email pre-filled

routers/user/auth.go

@@ -872,6 +872,9 @@ func ForgotPasswd(ctx *context.Context) {
 		return
 	}
 
+	email := ctx.Query("email")
+	ctx.Data["Email"] = email
+
 	ctx.Data["IsResetRequest"] = true
 	ctx.HTML(200, tplForgotPassword)
 }