Changes red text color, adds comments for colors
Mostly experimenting with collapsiblity functionality. See below.

- Experiments with collapsibility
- Adds element to take up space for the sidebar tabs (floats)
- Starts to transfer needed "reset" styles to sidebar.css
- Adds section in sidebar.css for "functionality" (I believe)
Plays with collapsers, checkboxes, and spacing
Plays with transform field spacing a really tiny bit
Fixes not all jumpers being hidden

- Should jump-to-top always be visible? Should there just always
be one at the bottom?