Update directory structure and separate styling

[sedroche]

This style guide is being used as a reference for architecture and styleguide https://github.com/toddmotto/angularjs-styleguide

It outlines where we want to move to in terms of directory layout and component structure.

Main points:

• Move away from standalone controllers to using stateful/stateless components
• structured by feature
• modular structure

@david-martin First part of grouping our components by feature. This is a more scalable structure for the project than the current separation by type. This initial PR should cover the main functionality so far but more features/components will probably fall out as the main views are turned into component trees. Components shared amongst features are going into the shared directory.

This PR incorporates:

• Extract less into separate files.
• Add Templates.
• Group components by feature

[david-martin]

@sedroche Reviewing now & giving it a run through locally.

1 minor thing so far. Seeing an overflow/sizing issue with the service integration button

[david-martin]

@sedroche approving & merging after local run through. I'm reading through the styleguide in more detail, but in general its a :+1: from me. Would be good to link to the styleguide in the local development part of the docs. re: the button issue, I won't let that hold up the merge. I can create an issue if you like fyi, my chrome version is Version 58.0.3029.110 (64-bit)

[sedroche]

@david-martin Style guide added here

Cool. If you add a ticket and assign to me that would be great thanks