Update files for powerconverters 2.0+ support
Remove the outdated ic2-powerconverters-texture.txt
delete old textures for PowerConverters
Fix new block IDs in BC and RP2 that don't exist on old Tekkit versions
Overwrite old ic2-powerconverters-texture.txt instead of adding it
Merge pull request #17 from Blast0r/iss16.2

Added Powerconverters 2.0+ blocks and removed old ones