Merge pull request #19 from open-craft/eugeny/html-labels

Allowed placing HTML tags for all input fields in the D&D v2 xblock
Merge pull request #20 from open-craft/eugeny/html-labels

PR for addressing test related notes
Add touch device support
Merge pull request #21 from open-craft/touch-support

Add touch device support
Copy-pasted IntegrationTestBase from Mentoring XBlock and beat it up to local needs.
Extracted plain and HTML'ed xblock definitions into data files.
Dummy integration test to verify workbench integration tests can be successfully run.
Updated readme to include correct command to run tests
Added nose-parameterized dependency for parameterized tests
Integration test for display_name and question text
Improved test parameters so html contents are now clearly visible
Improved test scenario discovery
Further improved test scenario discovery
Added plain text tests (broken)
Removed data-based scenarios and simplified test scenario preparation
Added rendering integration tests
Added interaction test (PoC, more to come)
Interaction tests: items feedback, final feedback and reset
Removed unused utils moudle