Update to 1.7.4

More code cleanup.
Added more configurable options for blocks.
Added block for Adventure Mode switch by default. (Thig gamemode will be
handler soon)
Added block for dropping creative item.
Added hopper block by default. (Will not acceppt creative items)
Added block from taking survival items from chest etc. by creative
player. (This will prevent also survival items from marking as creative
one)
Added configurable message for blackList block info.