Add new logo (#9)

* Delete extension.png

* Delete [email protected]

* Add new extension logo

* Delete extension.png

* Add minified version of extension.png

* Delete extension.png

* Add proper sort logo

* Delete extension.png

* Uploaded newly sized logo files

After discussions with @chrisdl we came to the conclusion to try 64 and 128 (1x, 2x) as logo sizes to try to balance as little as possible to download and making it look good.

Author: aaaberg