Add some useful development gems.
Add gem squeel. Squeel rocks!
Link sprint with tasks, add sprint select to task edit form.
Add CanCan role manage_sprints.
View-based restrictions.
Controller check for manage_sprints role.
Bugfix. Change to correct 'where' format.
Remove forgotten 'false' from ability. =)
Add method and rake task for dead sprints regen.
Merge pull request #6 from ffloyd/edge

Менеджер проекта может добавлять задачи в итерации