design: replace image logos

There were many issues with the previous logo:
- compression green pixels everywhere
- no dark version
- GIF saved as PNG (OMG)

user/config/themes/quark.yaml

@@ -11,14 +11,14 @@ spectre:
   exp: false
   icons: true
 custom_logo:
-  user/themes/textbook/images/logo/logo.png:
-    name: logo.png
-    type: image/png
-    size: 59253
-    path: user/themes/textbook/images/logo/logo.png
+  user/themes/textbook/images/logo/m3p2-logo-with-text-white-optimized-432x150.gif:
+    name: m3p2-logo-with-text-white-optimized-432x150.gif
+    type: image/gif
+    size: 331534
+    path: user/themes/textbook/images/logo/m3p2-logo-with-text-white-optimized-432x150.gif
 custom_logo_mobile:
-  user/themes/textbook/images/logo/logo.png:
-    name: logo.png
-    type: image/png
-    size: 59253
-    path: user/themes/textbook/images/logo/logo.png
+  user/themes/textbook/images/logo/m3p2-logo-with-text-black-optimized-432x150.gif:
+    name: m3p2-logo-with-text-black-optimized-432x150.gif
+    type: image/gif
+    size: 348861
+    path: user/themes/textbook/images/logo/m3p2-logo-with-text-black-optimized-432x150.gif

user/config/themes/textbook.yaml

@@ -18,14 +18,14 @@ spectre:
   exp: false
   icons: true
 custom_logo:
-  user/themes/textbook/images/logo/logo.png:
-    name: logo.png
-    type: image/png
-    size: 59253
-    path: user/themes/textbook/images/logo/logo.png
+    user/themes/textbook/images/logo/m3p2-logo-with-text-white-optimized-432x150.gif:
+        name: m3p2-logo-with-text-white-optimized-432x150.gif
+        type: image/gif
+        size: 331534
+        path: user/themes/textbook/images/logo/m3p2-logo-with-text-white-optimized-432x150.gif
 custom_logo_mobile:
-  user/themes/textbook/images/logo/logo.png:
-    name: logo.png
-    type: image/png
-    size: 59253
-    path: user/themes/textbook/images/logo/logo.png
+    user/themes/textbook/images/logo/m3p2-logo-with-text-black-optimized-432x150.gif:
+        name: m3p2-logo-with-text-black-optimized-432x150.gif
+        type: image/gif
+        size: 348861
+        path: user/themes/textbook/images/logo/m3p2-logo-with-text-black-optimized-432x150.gif