Fix #85 - Corrected step-by-step child views height.
Fix #87 - Time taken for first leg in step-by-step headers.
Fix #88 - Used wrapper function to remove listener.
Merge pull request #86 from vreixo/issue85

Fix #85 - Corrected step-by-step child views height.
Merge pull request #89 from vreixo/issue87

Fix #87 - Time taken for first leg in step-by-step headers.
Merge pull request #90 from vreixo/issue88

Fix #88 - Used wrapper function to remove listener.