Wrapping long texts in task names in graph

Created a textSizing service capable of detecting how long a text will be rendered in the browser and how to break the text apart in chunks of the lengthier amount of characters possible, less than a minimum specified.

Integrated jQuery into an Angular service in order to perform those measurements.

Displaying texts wrapped in d3 thanks to the usage of tspan tags.

- textSizingService service
    - getTextWidth(text, styleOptions)
    - breakInChunks(text, maxWidth)
- jQuery service

Fixes #6.