added link to dashboard to _nav section
added images to item listing
added ability to choose heading photo
add failing test and uniq index to item_tags table
added test for image list
change item set_tags implementation and repair tests
update to current master state
исправлен тест "Не создает дубликатов имеющихся тегов"
add test for changing heading image
merge with upstream/master
Merge pull request #49 from monshq/feature-5-heading-image

Feature #5 heading image
add ability to delete photos
remove excessive file removal
optimisation set_tags method
Merge remote-tracking branch 'upstream/master' into feature-48-delete-tags-from-item

Conflicts:
	db/schema.rb
bad merged shema
Merge pull request #54 from monshq/feature-52-deleting-photos

Feature #52 deleting photos
Перенес тест в unit тесты, создал сценарий, создал хелпер для заполнения item
add guard and spork
add trap methods for FactoryGirl and device