Fixed dependency issues. Simplified attach. Cargo fmt

[tiago18c]

This commit fixes several issues regarding the ABL Token example:

• Dependency issues when running the UI
• Fixed some display and interaction issues on the UI
• Cleanup unused code and needless console.log
• Simplified the attach instruction (which could be completely removed, same thing can be achieved through spl-token set-transfer-hook <program_id>). The metadata can be set by a follow up call to change_mode
• run cargo fmt