Update docs for ClearML server 1.6 (#280)

docs/webapp/datasets/webapp_dataset_page.md

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+---
+title: Datasets Page
+---
+
+:::tip version compatibility 
+To use the WebApp's Dataset pages, you must use `clearml` and `clearml-server` versions 1.6+.  
+:::
+
+Use the **Datasets** Page to navigate between and manage datasets. The page shows summaries 
+for all datasets created using [ClearML Data](../../clearml_data/clearml_data.md).
+
+Click on a dataset card to navigate to its [Version List](webapp_dataset_viewing.md), where you can view the 
+dataset versions' lineage and contents. 
+
+![Dataset page](../../img/webapp_dataset_page.png)
+
+
+## Dataset Cards
+
+The dataset cards display summarized dataset information:
+
+<div class="max-w-50">
+
+![Dataset card](../../img/webapp_dataset_card.png)
+
+</div>
+
+* Dataset name
+* Time since last update
+* Number of versions
+* Details about latest version
+  * Number of files
+  * Size
+* Tags 
+
+### Dataset Actions
+
+Click <img src="/docs/latest/icons/ico-bars-menu.svg" alt="Menu" className="icon size-md space-sm" /> on the top right
+of a dataset card to open its context menu and access dataset actions.  
+
+<div class="max-w-50">
+
+![Dataset context menu](../../img/webapp_dataset_card_context_menu.png)
+
+</div>
+
+* **Rename** - Change the dataset’s name
+* **Add Tag** - Add label to the dataset to help easily classify groups of dataset.
+* **Delete** - Delete the dataset and all of its versions. To delete a dataset, all its versions must first be 
+  [archived](../webapp_archiving.md). 

docs/webapp/datasets/webapp_dataset_viewing.md

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+---
+title: Dataset Details
+---
+
+:::tip version compatibility 
+To use the WebApp's Dataset pages, you must use `clearml` and `clearml-server` versions 1.6+.  
+:::
+
+The dataset page lists the dataset's versions. For a selected version, the **Dataset Version Panel** shoes its lineage 
+in graph form. 
+
+![Dataset lineage](../../img/webapp_dataset_lineage.png)
+
+Each node in the graph represents a dataset version, and shows the following details:
+
+<div class="max-w-50">
+
+![Dataset node info](../../img/webapp_dataset_node.png)
+
+</div>
+
+* Version name and number
+* Version size 
+* Version update time
+* Version details button - Hover over the version and click <img src="/docs/latest/icons/ico-console.svg" alt="console" className="icon size-md space-sm" /> 
+  to view the version’s [details panel](#version-details-panel) 
+  
+## Version Details
+### Version Info
+
+On the right side of the dataset version panel, view the **VERSION INFO** which shows: 
+* Version name
+* Dataset ID 
+* Version file size 
+* Number of files
+* Number of links
+* Changes from previous version 
+  * Number of files added 
+  * Number of files modified 
+  * Number of files removed 
+  * Change in size
+
+<div class="max-w-50">
+
+![Version info](../../img/webapp_dataset_version_info.png)
+
+</div>
+
+To view a version’s detailed information, click **Full details**, which will open the dataset version’s [task page](../webapp_exp_track_visual.md).
+
+![Dataset task info](../../img/webapp_dataset_task_page.png)
+
+To view the information for any version in the lineage graph, click its node, and the **VERSION INFO** panel displays
+that version's details. 
+
+### Version Details Panel
+
+Click on **DETAILS** on the top left of the info panel or hover over a version node and click <img src="/docs/latest/icons/ico-console.svg" alt="details" className="icon size-md space-sm" /> 
+to view:
+* **CONTENT** - Table summarizing version contents, including file names, file sizes, and hashes 
+* **PREVIEW** - A preview of the dataset version's contents 
+  access [plot tools](../webapp_exp_track_visual.md#scalar-plot-tools). Click on a debug sample to expand it. 
+* **CONSOLE** - The dataset version’s console output
+
+Click <img src="/docs/latest/icons/ico-max-panel.svg" alt="Expand" className="icon size-md space-sm" /> to on the content panel header to view the panel in full screen. 
+
+## Dataset Actions
+The following table describes the actions that can be done from the dataset versions list.
+
+Access these actions with the context menu by right-clicking a version on the dataset versions list.
+
+| Action | Description | 
+|-----|----|
+|Add Tag |User-defined labels added to versions for grouping and organization. |
+|Archive| To more easily work with active dataset versions, archive a version. [See Archiving](../webapp_archiving.md).| 
+|Restore|Action available in the archive. Restore a version to the active dataset versions table.|
+|Delete| Delete an archived version and its artifacts. This action is available only from the dataset’s archive |
+
+![Dataset actions](../../img/webapp_dataset_actions.png)
+
+The actions mentioned in the chart above can be performed on multiple versions at once. [Select multiple versions](#selecting-multiple-versions), 
+then use either the context menu, or the bar that appears at the bottom of the page, to perform operations on the 
+selected versions.
+
+## Selecting Multiple Versions
+Select multiple versions by clicking the checkbox on the left of each relevant version. Clear any existing selection by 
+clicking the checkbox in the top left corner of the list.
+
+Click the checkbox in the top left corner of the list to select all items currently visible.
+
+An extended bulk selection tool is available through the down arrow next to the checkbox in the top left corner, enabling selecting items beyond the items currently on-screen:
+* All - Select all versions in the dataset
+* None - Clear selection
+* Filtered - Select all versions in the dataset that match the current active filters
+