🔧 [Refactor] New Logos

Created by: Mogge

⚡ Refactor ticket

We need new Logos for the demo version of ocelot.social

Related files:

webapp/static/favicon.ico
webapp/static/img/custom/Logo-Horizontal.svg
webapp/static/img/custom/Logo-Horizontal-Dark.svg (so far it was the same as Logo-Horizontal.svg)
webapp/static/img/custom/logout.svg
webapp/static/img/custom/password-reset.svg
webapp/static/img/custom/sign-up.svg (looks the same as logout.svg but may be different size)
webapp/static/img/custom/under-maintenance.svg (same as logout.svg)
webapp/static/img/custom/welcome.svg

We have the permission of Amelia Wattenberger to use the ocelot she created: https://thenounproject.com/term/ocelot/410052/

The Logo we use on our website is too colorful and the colors used have a too strong contrast to the colors used in the layout.