drop "chisel." from all item and block names

this is the first step towards a more vanilla like naming scheme
rename all blocks to fit vanilla naming scheme
add block remapping for old chisel versions

Chisel versions 1.5.4 to 1.5.7
update language file to new block names

followup of 70150bd1eeb50ffc6effd856ec3f9e2d0cc59e9d
Merge pull request #66 from EoD/unify-block-names-pokefenn

Unify block names