Acquisition 0.2

New features:

• Auto online/offline status for control.poe.xyz.is
• Multiple shop threads for very large shops (over the limit of 50000 characters)
• Update check will now run from the main window too, it won't steal focus though unlike on the login screen

Bugfixes:

• Fixed quality filter not working correctly when searching for items with 0 quality
• Fixed unchanged shops being erroneously updated
• Fixed socketed gems +level filter
• Fixed possible deadlock when updating items