Speed up level data loading process

Optimized blocks apply with indexes of sprites in array by blockID
Optimized BGOs apply with indexes of sprites in array by bgoID
Change frame delays on animated BGOs
Added BGO's object
BGO indexes
Fixed bug with block index
New class for BGOs, added BGO's animation
Fixed grammar mistake "sizeble" to "sizable"
"Warps and Doors" toolbox
Animation switch in "View" menu
Merge pull request #5 from Wohlstand/master

Merge 4