Docs: Add field config documentation (#24647)

* Create field-config.md

* Update field-config.md

* updated intros

* Update field-config.md

* changed file name

* Update whats-new-in-v7-0.md

* added links and content

* Update docs/sources/panels/field-configuration-options.md

Co-authored-by: Dominik Prokop <dominik.prokop@grafana.com>

* Update docs/sources/panels/field-configuration-options.md

Co-authored-by: Dominik Prokop <dominik.prokop@grafana.com>

* Update docs/sources/panels/field-configuration-options.md

Co-authored-by: Dominik Prokop <dominik.prokop@grafana.com>

* Update docs/sources/panels/field-configuration-options.md

Co-authored-by: Dominik Prokop <dominik.prokop@grafana.com>

* Update docs/sources/panels/field-configuration-options.md

Co-authored-by: Dominik Prokop <dominik.prokop@grafana.com>

* Update field-configuration-options.md

* Update field-configuration-options.md

Co-authored-by: Dominik Prokop <dominik.prokop@grafana.com>

docs/sources/guides/whats-new-in-v7-0.md

@@ -68,7 +68,7 @@ The [Google Sheets data source](https://grafana.com/grafana/plugins/grafana-goog
 
 Learn more about this feature in [Transformations]({{< relref "../panels/transformations.md" >}}).
 
-## Field overrides
+## Field configuration options and overrides
 
 With Grafana 7.0 we are introducing a new, unified data configuration system that powers a consistent UI for setting data options across visualizations as well as making all data display settings data driven and overridable. This new option architecture and UI will make all panels have a consistent set of options and behaviors for attributes like `unit`, `min`, `max`, `thresholds`, `links`, `decimals` or `value mappings`. Not only that but all these options will share a consistent UI for specifying override rules and is extensible for custom panel specific options.
 
@@ -76,6 +76,8 @@ Up until now the overrides were available only for Graph and Table panel(via Col
 
 This feature enables even more powerful visualizations and fine grained control over how the data is displayed.
 
+Learn more about this feature in [Field configuration options]({{< relref "../panels/field-configuration-options.md" >}}).
+
 ## Inspect panels and export data to CSV
 
 {{< docs-imagebox img="/img/docs/v70/panel_edit_export_raw_data.png" max-width="800px" class="docs-image--right" caption="Panel Edit - Export raw data to CSV" >}}

docs/sources/menu.yaml

@@ -162,6 +162,8 @@
     name: Queries
   - link: /panels/transformations/
     name: Transformations
+  - link: /panels/field-configuration-options/
+    name: Field config options
   - link: /panels/calculations-list/
     name: Calculations list
 - name: Dashboards
@@ -221,8 +223,8 @@
       link: /linking/dashboard-links/
     - name: Panel links
       link: /linking/panel-links/
-    - name: Templates and variables
-      link: /variables/
+- name: Templates and variables
+  link: /variables/
   children:
     - link: /variables/templates-and-variables/
       name: Overview

docs/sources/panels/transformations.md

@@ -9,10 +9,10 @@ weight = 300
 
 # Transformations
 
-> **Note:** This documentation refers to a Grafana 7.0 beta feature. This documentation will be frequently updated to reflect updates to the feature, and it will probably be broken into smaller sections when the feature moves out of beta.
-
 This page explains what transformations in Grafana are and how to use them.
 
+> **Note:** This documentation refers to a Grafana 7.0 beta feature. This documentation will be frequently updated to reflect updates to the feature, and it will probably be broken into smaller sections when the feature moves out of beta.
+
 Transformations process the result set before it’s passed to the visualization. You access transformations in the Transform tab of the Grafana panel editor.
 
 Transformations allow you to rename fields, join separate time series together, do math across queries, and more. For users, with large dashboards or with heavy queries, being able to reuse the query result from one panel in another panel can be a huge performance gain.