Improve the status of send messages (sending, sent, received, failed)

- tweaks and new L&F for download progress

Riot/Modules/Room/Views/CircleProgressView/CircleProgressView.swift

@@ -18,7 +18,7 @@ import UIKit
 
 @IBDesignable
 @objcMembers
-class CircleProgressView: UIView {
+class CircleProgressView: MXKPieChartView {
     // MARK: - Constants
     
     private static let minStrokeEnd: CGFloat = 0.000000000001
@@ -42,6 +42,14 @@ class CircleProgressView: UIView {
             strokeEnd = max(min(value, CircleProgressView.maxStrokeEnd), CircleProgressView.minStrokeEnd)
         }
     }
+    override var progress: CGFloat {
+        get {
+            return value
+        }
+        set {
+            value = newValue
+        }
+    }
 
     // MARK: - Private members