CSS standardisation

+ Added a more sensible default for moving average yValue
+ Standardised the CSS classes (dash-case not camelCase)
+ Remnoved the CSS class setters functions
Bringing blue back

And adding value accessors
Added data manipulation to app
Merge pull request #139 from ColinEberhardt/css-standardise

CSS standardisation
Merge branch 'master' of https://github.com/ScottLogic/d3-financial-components
Merge pull request #142 from andyaiken/master

Added data manipulation to app
Roll out of value accessor
Merge pull request #144 from ColinEberhardt/master

Roll out of value accessor 

I'm merging this in as it has already been introduced to our moving average code!
jscs now runs as part of the build. dist files rebuilt.