highchart shows real files data
refactoring statistics_controller.rb, new chart of items count added, table added
change model user
refactoring charts to js, some specs
refactoring statistics
refactoring statisctics in item.rb, statistics/index.html.slim, charts.js.coffee
some spec refactoring
add change for api
add changes for model
spec for item.statistics added
 user has api key, and expiration date
refactoring code
add rspec for users_api
statistics_controller_spec.rb added
add rspec for user_model
yandex map added to locations.js.coffee; charts.js.coffee and statistics_controller_spec.rb rafactoring
real data added to yandex map, Placemark added, style modified
refactor locations.js.coffee
add rspec, route and action for zip
add code to action download_folder