Replace the default Cinnamon theme

.gitignore

@@ -1,3 +1,4 @@
+data/theme/cinnamon.css
 debian/*.debhelper
 debian/*.log
 debian/*.substvars

data/meson.build

@@ -5,9 +5,16 @@ install_subdir(
     install_dir: pkgdatadir,
 )
 
+subdir('theme')
+
 install_subdir(
     'theme',
-    exclude_files: ['theme-changelog.txt'],
+    exclude_files: [
+        'theme-changelog.txt',
+        'meson.build',
+        'parse-sass.sh'
+    ],
+    exclude_directories: ['cinnamon-sass'],
     install_dir: pkgdatadir,
 )
 

data/org.cinnamon.gschema.xml

@@ -484,13 +484,9 @@
       <description>Aliases for use in the Alt-F2 dialog. This is a list of strings of the form a:b, where an instance of "a" is to be replaced with "b". Replacement is only performed on the first word.</description>
     </key>
 
-    <key type="s" name="show-media-keys-osd">
-      <default>"medium"</default>
-      <summary>Whether the media keys osd is disabled or its relative display size</summary>
-      <description>
-      Allows setting of the default size of the media keys osd or disables it completely.
-      Possible values are "small", "medium", "large", or "disabled".
-      </description>
+    <key type="b" name="show-media-keys-osd">
+      <default>true</default>
+      <summary>Whether or not to show the media keys osd</summary>
     </key>
 
     <key name="startup-icon-name" type="s">