Closes#424
### Changes
- Adds Browsertrix logo to the nav bar!!
- Will license the typeface (Konsole) as soon as this gets merged.
- Changes the theme colour to Webrecorder's turquoise brand colour
- Adjusts the usage of `primary` vs `blue` for elements where it
shouldn't be the same
- Changes the _Cancel & Discard_ button of the cancel crawl dialogue to
`danger` button variant
- Replaces the Replay icon with the new ReplayWebpage icon!
- Fixes the favicon SVG linking (wrong name, oops!)
- Fills the microscope lens in the microscope icon
- Removes the old btrix-cloud.svg logo
Co-authored-by: sua yoo <sua@webrecorder.org>
Partially addresses #1241
### Changes
- Adds Browsertrix logo to readme
- It detects if you're in light or dark mode and adjusts the text color
accordingly! _The future is now!_
- Minor readme updates
- Updates icon and adds favicon SVGs to the docs
- This does not yet use Konsole for the docs site title. Will have to
sort this out later along with private hosting for that font.
- Updates docs theme to use new brand colours — picked the green for
this one, will probably be consistent across all of Webrecorder's MKDocs
sites.
