Bring Ep07 to Ep10 to new template

[rogerkuou]

This PR focus on bringing the most updated (9b03f489) content of Ep07-10 to new template format.

• [x] Restore the original index number to include the introduction eps
• [x] Ep 07-vector-data-in-python
• [x] Ep 08-crop-raster-data
• [x] Ep 09-raster-calculations
• [x] Ep 10-zonal-statistics

[rogerkuou]

Thanks @fnattino ! I applied your comments and will merge