up Marketplace controller

* add transaction support for deleting item
up UsedItem model

* delete related models while deleting
up UsedItemPhoto model

* delete pictures from system if database record was removed
up top menu links

* show ‘add used item’ link
up routes
up func tests
up unit test con
up links
up unit test
up sandbox
up codeception config

* set @fixtures alias
move files to another folder
up Category tests

* make fixture file
* load fixtures
up UsedItem tests

* make fixture file
* up tests
up UsedItemType tests

* make fixture file
* load fixtures
make PhotoFixture file
up UsedItemPhoto model

* name must be set
add PhpbbUserFixture file
up UsedItemFixture file

* path was incorrect
up CategoryTest