Allow setting logo in the admin config

src/api/app/controllers/webui/configuration_controller.rb

@@ -18,7 +18,7 @@ def update
 
   def configuration_params
     params.require(:configuration).permit(:name, :title, :description, :tos_url, :code_of_conduct, :contact_name, :contact_url,
-                                          :unlisted_projects_filter, :unlisted_projects_filter_description)
+                                          :unlisted_projects_filter, :unlisted_projects_filter_description, :logo)
   end
 
   def set_configuration

src/api/app/models/configuration.rb

@@ -1,5 +1,6 @@
 # The OBS instance configuration
 class Configuration < ApplicationRecord
+  has_one_attached :logo
   after_save :delayed_write_to_backend
 
   include CanRenderModel

src/api/app/views/layouts/webui/_top_navigation.html.haml

@@ -1,7 +1,7 @@
 %nav.navbar.navbar-dark.navbar-themed-colors.fixed-top
   .container-fluid.d-flex.flex-nowrap.justify-content-between.w-100
     = link_to(root_path, class: 'navbar-brand', alt: 'Logo') do
-      = image_tag('obs-logo_small.svg')
+      = image_tag(::Configuration.logo.attached? ? ::Configuration.logo : 'obs-logo_small.svg')
     .d-flex.nav
       = render partial: 'layouts/webui/top_navigation_search'
       - if User.session

src/api/app/views/webui/configuration/index.html.haml

@@ -18,6 +18,11 @@
           Description
           %abbr.text-danger{ title: 'required' } *
         ~ f.text_area :description, rows: 7, required: true, class: 'form-control'
+      .mb-3
+        = f.label(:logo) do
+          Logo
+          %small.form-text The image displayed on the left side of the top navigation bar.
+        ~ f.file_field :logo, class: 'form-control'
       .mb-3
         = f.label(:tos_url) do
           Terms Of Service URL