- move `usa-accordion` class to wrap all accordion elements
- remove background color form `accordion` class and move it to atat
specific class `accordion__header`
- create class names for styling elements instead of relying on element
type
- Removed unused styling from _accordions css.
- Removed references to accordion classes from applications index page
since this will be restyled later.
- Added Accordion macro to the Task Order index page and created
temporary initial
toggle list of All Task Orders.
Templates and fragments that relate to specific resources (portfolios,
applications, task orders) should reside in directories named for the
relevant resource. This also matches the way the application routes are
distributed among modules named for each resource type.
