Merge pull request #231 from Maledictus/master

Vangog: Google Picasa plugin for Blasq
[SB2] Raise main window on tab switch.
[Core] Early check for IHaveSettings in showSettingsFor()
[Interfaces] Added IPluginsManager::OpenSettings().
Merge branch 'master' of github.com:0xd34df00d/leechcraft