Rewritten the financeScale

Rewritten the financeScale to remove weekday dependency
Hide Weekends is now an option, off by default
Select reasonable time periods of tick spacing
Added documentation inline with code
Added option to the App to hide and show weekends
I think you have the wrong format for you @param tags, the format is:

    @param {type} parameterName description of the parameter

see: http://usejsdoc.org/tags-param.html