Some tweaks for scrollbars/ using UI also for the vertical one.
1000 lines instead of 10000 at start.
Removed unused imports.
Removed some unused label in toolbar.
Moved SLANG logo to top.
Moved SLANG logo to top.
Revert "Moved SLANG logo to top."

This reverts commit d2e7234ab164b60a2bc0e1d03f076fbc982ea3a0.
Update tasks.