Add documentation for logs times ranges

- Add information on time ranges features
- Updates logs screenshot images
- Update context menu screenshots

doc/user/project/clusters/kubernetes_pod_logs.md

@@ -13,7 +13,7 @@ Everything you need to build, test, deploy, and run your app at scale.
 
 [Kubernetes](https://kubernetes.io) pod logs can be viewed directly within GitLab.
 
-![Pod logs](img/kubernetes_pod_logs_v12_5.png)
+![Pod logs](img/kubernetes_pod_logs_v12_8.png)
 
 ## Requirements
 
@@ -50,14 +50,23 @@ The logs view will contain the last 500 lines for a pod, and has control to filt
 - Pods.
 - [From GitLab 12.4](https://gitlab.com/gitlab-org/gitlab/issues/5769), environments.
 - [From GitLab 12.7](https://gitlab.com/gitlab-org/gitlab/-/merge_requests/21656), [full text search](#full-text-search).
+- [From GitLab 12.8](https://gitlab.com/gitlab-org/gitlab/issues/197879), dates.
 
 Support for pods with multiple containers is coming [in a future release](https://gitlab.com/gitlab-org/gitlab/issues/13404).
 
 Support for historical data is coming [in a future release](https://gitlab.com/gitlab-org/gitlab/issues/196191).
 
+### Filter by date
+
+> [Introduced](https://gitlab.com/gitlab-org/gitlab/issues/197879) in GitLab 12.8.
+
+When you enable [Elastic Stack](../../clusters/applications.md#elastic-stack) on your cluster, you can filter by date.
+
+Click on "Show last" to see the available options.
+
 ### Full text search
 
-> [Introduced](https://gitlab.com/gitlab-org/gitlab/-/merge_requests/21656) in GitLab 12.8.
+> [Introduced](https://gitlab.com/gitlab-org/gitlab/-/merge_requests/21656) in GitLab 12.7.
 
 When you enable [Elastic Stack](../../clusters/applications.md#elastic-stack) on your cluster,
 you can search the content of your logs via a search bar.

doc/user/project/integrations/prometheus.md

@@ -457,12 +457,31 @@ Note the following properties:
 When viewing a custom dashboard of a project, you can view the original
 `.yml` file by clicking on **Edit dashboard** button.
 
+### Chart Context Menu
+
+From each of the panels in the dashboard, you can access the context menu by clicking the **{ellipsis_v}** **More actions** dropdown box above the upper right corner of the panel to take actions related to the chart's data.
+
+![Context Menu](img/panel_context_menu_v12_8.png)
+
+The options are:
+
+- [View logs](#view-pod-logs-ultimate)
+- [Download CSV](#downloading-data-as-csv)
+- [Generate link to chart](#embedding-gitlab-managed-kubernetes-metrics)
+- [Alerts](#setting-up-alerts-for-prometheus-metrics-ultimate)
+
+### View Pod Logs **(ULTIMATE)**
+
+> [Introduced](https://gitlab.com/gitlab-org/gitlab/issues/122013) in GitLab 12.8.
+
+If you have [Kubernetes Pod Logs](../clusters/kubernetes_pod_logs.md) enabled, you can navigate from the charts in the dashboard to view Pod Logs by clicking on the context menu in the upper-right corner.
+
+If you use the **Timeline zoom** function at the bottom of the chart, logs will narrow down to the time range you selected.
+
 ### Downloading data as CSV
 
 Data from Prometheus charts on the metrics dashboard can be downloaded as CSV.
 
-![Downloading as CSV](img/download_as_csv.png)
-
 ### Setting up alerts for Prometheus metrics **(ULTIMATE)**
 
 #### Managed Prometheus instances