Added per-channel setting to enforce automatic URL titles for entries

Author: intoeetive

docs/control-panel/channels.md

@@ -95,6 +95,7 @@ NOTE: **Note:** We recommend using the default base URL variable `{base_url}` de
 - **Allow Preview** -- When set to yes, the entry preview will be allowed, don't forget to set the Preview URL too.
 - **Generated title** -- When a new entry is created or previewed, this value will be inserted by default in the Title field. This is helpful if you wish every entry in a channel to have the titles follow a certain format. The automatic URL Title creating javascript for the Publish page will ignore this text during processing.
 - **URL title prefix** -- When a new entry is created or previewed, this value will be appended to the beginning of the url_title value, which will help you insure that url_titles are unique between channels.
+- **Enforce automatic URL title** -- Make the URL title field read-only and generate unique value for it automatically. This might be useful for entries that don't have their own page on front-end or if you just want to skip the routine of generating URL Title. Note that when this setting is turned on, you will also not be able to change URL Titles for existin entries.
 - **Status** -- The default status for new channel entries. The available options depend on what [Statuses](#statuses-tab) the channel is assigned to use.
 - **Category** -- The default category for new channel entries. The available options depend on what [Category Group](control-panel/categories.md) the channel is assigned to use and which categories are defined for that group.
 - **Search excerpt** -- You can specify which field from your entries to use in search result excerpts. The list is dynamically populated depending on which [Fields](control-panel/field-manager/field-manager-settings.md) the channel is assigned to use. Only fields that have been set as "searchable" will be included.