Merge pull request #268 from boudewijn-tribler/bugfixes

Bugfixes
Stop destroying the details panel every time OnCollapse is called
Magnet status fix
Small fixes
More fixes for details panels
Wait before switching to 'Manage torrents' tab
Merge pull request #271 from egbertbouman/torrentdetails

Improved torrent details
Merge pull request #270 from boudewijn-tribler/bugfixes

Missing import.
Advance Dispersy pointer.