Minor - Update changelog for BBB plugin

plugin/bbb/changelog.md

@@ -4,6 +4,8 @@ Changes:
 * Add a pseudo-random guid to avoid clashing conferences when several Chamilo portals use the same server. If you were using this plugin before, you will have to update the plugin_bbb_meeting table to "alter table plugin_bbb_meeting add column remote_id char(36);".
 * Add possibility to hide recordings of previous conferences from the list. If you were using this plugin before, you will have to update the plugin_bbb_meeting table to "alter table plugin_bbb_meeting add column visibility tinytint not null default 1;".
 * Show action icons in the action column
+* Hide the ID of the meeting (this was an internal ID, useless to the final user). It is still in the HTML source, however
+* Show number of minutes of the recording (in the recordings list)
 
 version 2.1
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