- 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.
- darker gray for breadcrumbs and subheads
- larger font size for subheads
- updated toggle for environmnets list per-application
- more padding for application row