Conference schedule enhancements

I would suggest to enhance conference schedule by:

1. add option to download iCal (or common calendar format) calendar files which can be stored in attendees mobile devices
2. add option for registered users to personalise schedule and select tracks into your personal list... to ease up planning of attendance.

This would actually help organisers to see potential interest on topics (how crowded rooms might be) and attendees would see if they have selected all tracks they are interested.
In addition there is no reason to have schedule on paper - save money on printing and save nature by not generating additional waste.

未提及任何檔案、測試或進入點。首先定位會議議程和已註冊使用者流程，然後定義行事曆匯出格式和個人化行為；完成的標準是所要求的兩項議程增強功能都能為參與者和主辦者正常運作。

由索引模型根據 Issue 內容生成。