[ADF-2824] Reviewed search docs for 2.4 (#3477)

* [ADF-2824] Moved search widget docs into separate pages

* [ADF-2824] Separated search widget page and added search filter service docs

* [ADF-2824] Updated new search docs with doc tools

docs/content-services/search-number-range.component.md

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+---
+Added: v2.4.0
+Status: Active
+Last reviewed: 2018-06-11
+---
+
+# Search number range component
+
+Implements a number range widget for the [Search Filter component](../content-services/search-filter.component.md).
+
+![Number Range Widget](../docassets/images/search-number-range.png)
+
+## Basic usage
+
+```json
+{
+    "search": {
+        "categories": [
+            {
+                "id": "contentSizeRange",
+                "name": "Content Size (range)",
+                "enabled": true,
+                "component": {
+                    "selector": "number-range",
+                    "settings": {
+                        "field": "cm:content.size",
+                        "format": "[{FROM} TO {TO}]"
+                    }
+                }
+            }
+        ]
+    }
+}
+```
+
+### Settings
+
+| Name | Type | Description |
+| ---- | ---- | ----------- |
+| field | string | Field to to use |
+| format | string | Value format. Uses string substitution to allow all sorts of [range queries](https://docs.alfresco.com/5.2/concepts/rm-searchsyntax-ranges.html). |
+
+## Details
+
+This component lets the user specify a range between two predefined numbers based on the
+particular `field`. See the [Search filter component](../content-services/search-filter.component.md) for full details of how to use widgets
+in a search query.
+
+#### Range query format
+
+See the [Search for ranges](https://docs.alfresco.com/5.2/concepts/rm-searchsyntax-ranges.html) page in the ACS docs for more information about the date range format.
+
+The `format` setting specifies how the date is displayed textually. Most of the format is
+displayed as-is but you can use `{FROM}` and `{TO}` markers to interpolate the range limits
+into the format string:
+
+```json
+"settings": {
+    "field": "cm:content.size",
+    "format": "[{FROM} TO {TO}]"
+}
+```
+
+The format above would be displayed at runtime as follows:
+
+```text
+cm:content.size:[0 TO 100]
+```
+
+## See also
+
+-   [Search filter component](../content-services/search-filter.component.md)
+-   [Search check list component](../content-services/search-check-list.component.md)
+-   [Search date range component](../content-services/search-date-range.component.md)
+-   [Search number range component](../content-services/search-number-range.component.md)
+-   [Search radio component](../content-services/search-radio.component.md)
+-   [Search slider component](../content-services/search-slider.component.md)
+-   [Search text component](../content-services/search-text.component.md)