Compatibility with official api, removed gridindex

Oupsi. I used a BON version at first, then switched to the official
API - wasn't able to find it before. Anyhow, it does not allow
getting the grid index from IGridInterface, so i had to remove that.
Applied Energistics Developer API rv7.a

Can be downloaded from the bottom of that page:
http://ae-mod.info/Downloads/
AE Card registration, recipe and language
Textures for AE Sensor Card