Remove "readonly"s from Theme for readability

TODO.md

@@ -2,8 +2,6 @@
 - html links color
 - invite/leave/forget backend funcs
 - license headers
-- replace "property var" by "property <object>" where applicable and
-  var by string and readonly
 - [debug mode](https://docs.python.org/3/library/asyncio-dev.html)
 - `pyotherside.atexit()`
 - way to put sidepane back to auto-sizing (snap)
@@ -63,7 +61,6 @@ OLD
 
 - Client improvements
   - Filtering rooms: search more than display names?
-  - nio.MatrixRoom has `typing_users`, no need to handle it on our own
   - Initial sync filter and lazy load, see weechat-matrix `_handle_login()`
     - See also `handle_response()`'s `keys_query` request
   - Direct chats category

src/qml/Theme.qml

@@ -5,7 +5,7 @@ QtObject {
 
     property int animationDuration: 100
 
-    readonly property QtObject fontSize: QtObject {
+    property QtObject fontSize: QtObject {
         property int smallest: 6
         property int smaller: 8
         property int small: 13
@@ -15,7 +15,7 @@ QtObject {
         property int biggest: 48
     }
 
-    readonly property QtObject fontFamily: QtObject {
+    property QtObject fontFamily: QtObject {
         property string sans: "SFNS Display"
         property string serif: "Roboto Slab"
         property string mono: "Hack"
@@ -23,7 +23,7 @@ QtObject {
 
     property int radius: 5
 
-    readonly property QtObject colors: QtObject {
+    property QtObject colors: QtObject {
         property color background0: Qt.hsla(0, 0, 0.9, 0.5)
         property color background1: Qt.hsla(0, 0, 0.9, 0.6)
         property color background2: Qt.hsla(0, 0, 0.9, 0.7)
@@ -33,90 +33,90 @@ QtObject {
         property color textBorder: Qt.hsla(0, 0, 0, 0.07)
     }
 
-    readonly property QtObject controls: QtObject {
+    property QtObject controls: QtObject {
-        readonly property QtObject button: QtObject {
+        property QtObject button: QtObject {
             property color background: colors.background2
         }
 
-        readonly property QtObject textField: QtObject {
+        property QtObject textField: QtObject {
             property color background: colors.background2
         }
 
-        readonly property QtObject textArea: QtObject {
+        property QtObject textArea: QtObject {
             property color background: colors.background2
         }
     }
 
-    readonly property QtObject sidePane: QtObject {
+    property QtObject sidePane: QtObject {
         property color background: colors.background2
 
-        readonly property QtObject settingsButton: QtObject {
+        property QtObject settingsButton: QtObject {
             property color background: colors.background2
         }
 
-        readonly property QtObject filterRooms: QtObject {
+        property QtObject filterRooms: QtObject {
             property color background: colors.background2
         }
     }
 
-    readonly property QtObject chat: QtObject {
+    property QtObject chat: QtObject {
-        readonly property QtObject selectViewBar: QtObject {
+        property QtObject selectViewBar: QtObject {
             property color background: colors.background2
         }
 
-        readonly property QtObject roomHeader: QtObject {
+        property QtObject roomHeader: QtObject {
             property color background: colors.background2
         }
 
-        readonly property QtObject roomEventList: QtObject {
+        property QtObject roomEventList: QtObject {
             property color background: "transparent"
         }
 
-        readonly property QtObject message: QtObject {
+        property QtObject message: QtObject {
             property color ownBackground: Qt.hsla(0.07, 0.4, 0.82, 0.7)
             property color background: colors.background2
             property color body: colors.foreground
             property color date: colors.foregroundDim
         }
 
-        readonly property QtObject daybreak: QtObject {
+        property QtObject daybreak: QtObject {
             property color background: colors.background2
             property color foreground: colors.foreground
             property int radius: theme.radius
         }
 
-        readonly property QtObject inviteBanner: QtObject {
+        property QtObject inviteBanner: QtObject {
             property color background: colors.background2
         }
 
-        readonly property QtObject leftBanner: QtObject {
+        property QtObject leftBanner: QtObject {
             property color background: colors.background2
         }
 
-        readonly property QtObject unknownDevices: QtObject {
+        property QtObject unknownDevices: QtObject {
             property color background: colors.background2
         }
 
-        readonly property QtObject typingMembers: QtObject {
+        property QtObject typingMembers: QtObject {
             property color background: colors.background1
         }
 
-        readonly property QtObject sendBox: QtObject {
+        property QtObject sendBox: QtObject {
             property color background: colors.background2
         }
     }
 
-    readonly property QtObject box: QtObject {
+    property QtObject box: QtObject {
         property color background: colors.background0
         property int radius: theme.radius
     }
 
-    readonly property QtObject avatar: QtObject {
+    property QtObject avatar: QtObject {
         property int size: 36
         property int radius: theme.radius
         property color letter: "white"
 
-        readonly property QtObject background: QtObject {
+        property QtObject background: QtObject {
             property real saturation: 0.22
             property real lightness: 0.5
             property real alpha: 1
@@ -124,7 +124,7 @@ QtObject {
         }
     }
 
-    readonly property QtObject displayName: QtObject {
+    property QtObject displayName: QtObject {
         property real saturation: 0.32
         property real lightness: 0.3
     }