GSoC weekly report No.7

[Evgeniy Berlog]

Hi.
I have done such tasks during last week:
1. Implemented removing shapes.
2. Implemented cloning shapes.
3. Fixed filters.
4. Moved HSSFObjectData to drawing layer

Here is my plan for next week:
1. Fix cloning of HSSFObjectData.
2. Fix cloning of documents with charts.
3. Check bugzilla reports.