added viewing of uploaded attachments in receiving inventory
added uploading of files in incoming, outgoing and receiving functions
Merge pull request #24 from Gryphyn23/master

added viewing of uploaded attachments in receiving inventory
Merge remote-tracking branch 'upstream/master'

Conflicts:
	protected/modules/inventory/controllers/IncomingInventoryController.php
	protected/modules/inventory/models/IncomingInventory.php
	protected/modules/inventory/views/incomingInventory/admin.php
	protected/modules/inventory/views/incomingInventory/incomingForm.php
	protected/modules/inventory/views/outgoingInventory/admin.php
	protected/modules/inventory/views/receivingInventory/receivingForm.php