Blockchain browser is rebuilded

Blockchain browser is rebuilded:
1. Edit box with Block number, onChange block is retrieved.
2. First, Previous, Next, Last (Block) buttons to navigate through blockchain. 
3. Total loaded blocks.
4. Edit box for searching.
5. Previous, Next button to get previous/next match.
6. Summary section, Hashes section of actual block.
7. List of transaction in actual block.
8. Data from transaction is accessible through Data button.
9. Each field highlights text which matches searched string