fixed further bugs. See issue tracker for further comments

	modified:   trade/app/controllers/auction_control.rb
	modified:   trade/app/controllers/item_control.rb
	modified:   trade/app/models/module/auction.rb
	modified:   trade/app/models/module/trader.rb
	modified:   trade/app/views/auction_page.haml
	modified:   trade/app/views/item_page.haml
	modified:   trade/app/views/items.haml
Further Bugfixes for auctions

	modified:   trade/app/controllers/item_control.rb
	modified:   trade/app/models/module/auction.rb
	modified:   trade/app/models/module/trader.rb
	modified:   trade/app/models/utility/holding.rb
	modified:   trade/app/views/items.haml
Fix link target
please test for bugs in auctions

more bugs fixed
	modified:   trade/app/controllers/auction_control.rb
	modified:   trade/app/models/module/auction.rb
removed unused view

	deleted:    trade/app/views/auction_page.haml
Reworked some comments. Moved listing of auctions to trader.
	modified:   trade/app/controllers/trader_control.rb
	modified:   trade/app/models/module/auction.rb
	modified:   trade/app/models/module/item.rb
	modified:   trade/app/models/module/offer.rb
	modified:   trade/app/models/module/trader.rb
	modified:   trade/app/models/module/user.rb
Marked Bug: loggs organisation instead of user when buying an item
(because controller invokes @user.working_for.buy_new_item(...)
	modified:   trade/test/activity_test.rb
Fixed Logging bug

	modified:   trade/app/controllers/item_control.rb
	modified:   trade/app/models/module/trader.rb
Fixed use of list_auctions
fixed a logging bug in the auction system

	modified:   trade/app/controllers/auction_control.rb
	modified:   trade/app/models/module/activity.rb
	modified:   trade/app/models/module/auction.rb
Started work on tests.
	modified:   trade/app/models/module/activity.rb
	modified:   trade/app/models/module/offer.rb
	modified:   trade/test/activity_test.rb
	modified:   trade/test/item_test.rb
Implemented a get_all method in the auction class. Auctions can now be sorted.
Work on item_test, please check the two not running tests, didn't find the mistake.
	modified:   trade/app/models/module/auction.rb
	modified:   trade/test/item_test.rb
more fixes for auctions: correct behaviour if the bid is equal to the
minimum selling price, correct price suggestion in the view

	modified:   trade/app/models/module/auction.rb
	modified:   trade/app/views/item_page.haml
Finished fixing errors of tests.
Due to the logic changes, some auction-tests still fail, but no more errors.
	modified:   trade/test/auction_test.rb
	modified:   trade/test/user_test.rb
Merge branch 'production' of https://github.com/ese-unibe-ch/ese2012-team4 into production
First version of categories in model.
	new file:   trade/app/models/module/category.rb
	modified:   trade/app/models/module/offer.rb
Added permenent Items (#74)

	modified:   trade/app/controllers/item_control.rb
	modified:   trade/app/models/module/item.rb
	modified:   trade/app/models/utility/holding.rb
	modified:   trade/app/public/css/itemtable.css
	modified:   trade/app/views/item_page.haml
	modified:   trade/app/views/items.haml
	modified:   trade/app/views/user_items.haml
small fixes

	modified:   trade/app/controllers/item_control.rb
	modified:   trade/app/models/module/trader.rb
fixed strange bug (when buying partial amounts, the item transferred incorrectly)

To Fix: no images for partially bought items

	modified:   trade/app/models/module/organization.rb
	modified:   trade/app/models/utility/holding.rb
Send messages from user page