Add architecture for chart options panel
Align measures & fact selector to the left
Fix max height of cube & fact selectors dropdowns
Move charts position
Improve performance of measure switching
Handle dimension selection in charts options
Reposition the buttons on the UI
Color for the timeline bar chart added
Refactor the for in hack to use Object.keys instead

A for in with an imediate break was used to retrieve the first key of an
object. We now use Object.keys
Add color on the bar chart
DC.js update

Fixes #4
Color odd line in table
Add possibility to change a chart type
Change param button render & other chart render fixes