Need: model
Need: controller basics
Test for 'Users' link has been moved to authorization specs + refactoring
Failing tests for correct links and authorized access
Need: class has been significantly simplified
Need: first simple variant of creation form + list of needs + main menu item
Typo fixed
Merge branch 'modeling-a-need'
Merge branch 'finishing-prototype-interface'
Authorization for access to list of users and needs, tests fixed
Resources have been redefined
Styles have been refactored
Common methods have been moved to ApplicationController
Empty user schedule pages, working tests, some authorization fixes