Improved manual: User Management/User registration (#4083)

* Draft 1 of Default User page

* Draft1 of User Management page

* Update 01_Index.md

* Update 12_User_management.md

* fix failing pipeline

* Apply suggestions from code review

Co-authored-by: Frans de Jonge <fransdejonge@gmail.com>

Co-authored-by: Frans de Jonge <fransdejonge@gmail.com>

docs/en/admins/01_Index.md

@@ -8,6 +8,7 @@ Learn how to install, update, and backup FreshRSS, as well as how to use the com
 
 ## Tutorials and Examples
 
+* [User management](12_User_management.md)
 * [Backing up FreshRSS](05_Backup.md)
 * [Installing themes](11_Themes.md)
 * [Installation on Debian 9/Ubuntu 16.04](06_LinuxInstall.md)

docs/en/admins/12_User_management.md

@@ -0,0 +1,35 @@
+# User Management
+
+## User list
+
+Settings page: `Administation` -> `Manage Users`.
+
+The [default user](13_Default_user.md) is marked with italic letters.
+
+## Create new user
+
+Settings page: `Administation` → `Manage Users`.
+
+For a new user the following information is necessary:
+* language
+* username
+* is it an administrator account?
+* password
+
+If in the `System configuration` the `Force email address validation` is enabled, then the email address input is shown and mandatory.
+
+## User registration form
+
+New users could use the self registration form in the frontend.
+
+The user registration form is available via the login form, when the maximum number of accounts is smaller than the number of created accounts (Set up in `Administration` → `System configuration`). If the maximum number of accounts is 0, than there is no limit on the number of user accounts.
+
+If in the `System configuration` the `Force email addres validation` is enabled, than the email address input is shown and mandatory.
+
+It is optional to have a `Terms of Service` (`ToS`). If ToS is enabled, then it is mandatory to check it for registration.
+
+### Enable Terms of Service (ToS)
+
+Create a file `tos.html` in `./data`.
+
+Example of TOS: see `./data/tos.example.html`

docs/en/admins/13_Default_user.md

@@ -0,0 +1,24 @@
+# Default User
+
+Currently, we have one `main user`, also called `default user`, or `admin`. All the others are `regular users`.
+
+The default user is the first created user within the install routine.
+
+## Manage
+
+The default user is always an administrator.
+
+It is impossible to demote or disable the user.
+
+## Anonymous reading mode
+
+The default user is used for the anonymous reading.
+
+How to enable the anonymous reading mode:
+* go to settings `Administration` → `Authentication`
+* enable the checkbox of `Allow anonymous reading of the default user's articles`
+* when no user is logged in then the feeds of the default user is shown
+
+## Change the default user
+
+There is no UI for changing the default user, but a CLI (`./cli/reconfigure.php --default_user YourNewAdmin`) is provided. It can also be changed manually by editing the text file `./FreshRSS/data/config.php` and changing `'default_user' => 'alice'`, to the desired user.