lergo-352 : when we have a one question quiz step, when playing lesson,
OK LETS GO isn't disabled as it should be before user answers
lergo-362 : Previous Recommended Lesson - not being erased from lesson
report
lergo-336-review : 2.1 There will 2 checkboxes, one for "practice" and
one for "test", with the check as default is in "practice"
Merge pull request #144 from lergo/lergo-352

lergo-352 : when we have a one question quiz step, when playing lesson,