Adds visible torrents states.

To fix:
- Disgusting colors.
- Something causes HUUUUUUUGE slowdowns when adding multiple torrents.
Fixed lag issue.
The onSecTick function in the main window was called 100 times per second.
I leave the choice of the appropriate colors to a >competant designer
Add background color on the progress bar

Also something else I can't remember.
Merge pull request #25 from fuyukaidesu/wip/visible-torrents-state

Visible torrents states