theme: fix logo and align with upstream

Author: diocas

theme-cernbox/theme.json

@@ -5,7 +5,7 @@
       "slogan": "CERNBox – The CERN Cloud Storage"
     },
     "logo": {
-      "sidebar": "cernbox/theme-cernbox/assets/cernbox-lrg.svg",
+      "topbar": "cernbox/theme-cernbox/assets/cernbox-lrg.svg",
       "favicon": "cernbox/theme-cernbox/assets/cernbox-abstract.svg",
       "login": "cernbox/theme-cernbox/assets/cernbox-lrg.svg",
       "notFound": "themes/owncloud/assets/cloud.svg"
@@ -16,6 +16,7 @@
     },
     "designTokens": {
       "colorPalette": {
+        "background-accentuate": "",
         "background-default": "",
         "background-highlight": "#edf3fa",
         "background-muted": "",
@@ -73,7 +74,7 @@
       "slogan": "CERNBox – The CERN Cloud Storage"
     },
     "logo": {
-      "sidebar": "cernbox/theme-cernbox/assets/cernbox-lrg.svg",
+      "topbar": "cernbox/theme-cernbox/assets/cernbox-lrg.svg",
       "favicon": "cernbox/theme-cernbox/assets/cernbox-abstract.svg",
       "login": "cernbox/theme-cernbox/assets/cernbox-lrg.svg",
       "notFound": "themes/owncloud/assets/cloud.svg"