Create basic tasks functional

[ffedoroff]

Please look at http://www.scrumdo.com/ before do this task.

Tasks requirements:

1. Workflow like in Pivotal tracker
2. Fields like in Pivotal tracker
3. Comments like in Pivotal tracker
4. Associated with Bugzilla bugs

You can skip next functional for now:

1. Iteration planing and all according to iterations
2. Drug and Drop functional