WIP: velocity chart
- added velocity chart #39
- fixed iteration serializer problem where storyIds werent reset (thus every fetched iteration ended up having all stories sideloaded)
- #39 property fix
WIP: velocity chart
- added grid lines on y-axis #39
WIP: velocity chart
- fixed issue were dimension of the chart werent set properly #39
WIP: velocity chart #39
- added axis text
- added velocity sprint beginning / ending
- added animation on bar hover
WIP: velocity chart
- fix jshint errors #39
Merge pull request #40 from topicus-ini/veloc

Veloc
Merge pull request #41 from topicus-ini/done

WIP: velocity chart