Feature template update

[timdmacdo]

This adds documentation syntax to the templates and removes high level documentation from the doxygen page (it will be added to the main website instead)

[coveralls]

Coverage remained the same at 55.312% when pulling db96947 on feature-template_update into 75998b1 on develop.

[coveralls]

Coverage remained the same at 55.312% when pulling 1ff1851 on feature-template_update into 75998b1 on develop.

[planes]

This looks good. The only comment I would say is that it might be nice to add an example of how you like to handle quantities with units in the inputs and outputs on the templates.

[planes]

Looks good.

[coveralls]

Coverage remained the same at 55.312% when pulling 54ddbd5 on feature-template_update into 75998b1 on develop.