We should store plugin metadata in the database for easy retrieval.
Koha::Plugins::Base::get_metadata should check the database for its own metadata. If it doesn't find anything in the database, it should check itself for a $metadata global as it does now, but if one does not exist, it should then check for a companion PLUGIN.yml file ( from Bug 24631 ) in the bundle_path() and load the metadata from there.
In either case it should then be stored in the database.
InstallPlugins() should force the plugins metadata to be updated from source to the database, as the plugin metadata may ( and should ) have changed in the updated plugin.
Created attachment 103981 [details] [review]
Bug 25316: Koha::Plugin::Base should automatically find plugin metadata and store it in the database for retreival