New design for the widgets section in the docs (#866)

* Initial commit for the new widgets section

* Placing all the widgets and refining the CSS and Hugo logic

* Initial commit for the new widgets section

* Placing all the widgets and refining the CSS and Hugo logic

* Rebased and updated the info according to @verythorough contribution

* Fixing the yaml codes for the relation and select widget sections

* Merging with widgets.md and app.j

* Fixing some silly mistakes (sorry!)

* Following @verythorough contributions :)

* Adding the markdown widget and fixing the widgets container background

* Adding the URL functionality and myself as a contributor :)

* Adding myself as a contributor :)

website/site/content/docs/widgets/text.md

@@ -0,0 +1,21 @@
+---
+label: "Text"
+target: "text"
+type: "widget"
+---
+
+### Text
+
+The text widget takes a multiline text field and saves it as a string. For shorter text inputs, use the string widget.
+
+- **Name:** `text`
+- **UI:** HTML textarea
+- **Data type:** string
+- **Options:**
+  - `default`: accepts a string; defaults to an empty string
+- **Example:**
+
+  ```yaml
+  - {label: "Description", name: "description", widget: "text"}
+  ```
+