Hi - I have installed the plugin-manager, but cannot see any reference to the plugins in the example config file.
I don't see a plugin called http_auth at all.
I am wondering what the point of the plugin manager is. It does not install the plugin, does not configure the plugin, or do anything useful at all. You are still required to manually download, unzip, run sql files, edit configuration files etc. It just adds another file to edit.
Anyway - how do I find and configure the plugins you mention.
If you have already installed plugin_manager please browse to Plugin Manager Center and download the required plugins... http_auth is available for download. Read the dependency requirements on the far right hand side of each plugin and download them as needed.
Plugin Manager does not install plugins automatically not it configures your plugins. What it does:
Simplified plugins distribution
Plugins updates
Plugins dependency information.
User-level control over account preferences.
Unified localization publishing and distribution.
Localization translation completeness tracking.
Plugin issues report system.
Release notes and documentation links
It also loads plugins by default so you don't have to register them in main.inc.php . While loading plugins automatically it will also load the default config.inc.php.dist configuration so in a sense it is loading configurations by default that allows the plugin to work out of the box in most cases.
I can tell you that giving users the ability to enable/disable functionality (plugins) is very welcome in my deployments but your experience may vary. Out of the top of my head, newmailnotify will bother many people and be useful for others, for example. It is extremely inconvenient to be on the phone with customers and your webmail resounding every time a new mail comes in. Before plugin_manager you had to either enable it globally for everyone or disable it all together; no in-between. Unless you hard code it to specifically not load for a specific user. In such case it becomes a pain when you have to deal with 10-20-50 users custom preferences. Regardless, you are not required to use plugin_manager if you don't find value in it.
Those "helper plugins" Rosali mentioned do not need any extra configuration if you are running plugin_manager. They will be loaded automatically; just make sure they exist in roundcube .../plugins/ folder.