Improvement blocks progress bar

[Frodek]

"Synchronizing with network" progress is proportional to blocks number, better should be proportional to bytes of blocks because first blocks are small, last block are large. It will be well if program inform about speed (kilobytes per second) loading block and estimated time - hours and days to end.
One problem - program must know total size of blocks

[Mike Hearn]

Good idea. It's already fixed in git master.