Raise max flicking speed while keyboard-scrolling

Lets holding the page down/up keybinds properly do their job again

TODO.md

@@ -6,7 +6,6 @@
 
 - Avatar tooltip can get displayed in front of presence menu
 - Use loading cursorShape
-- Increase keyboard page scroll speed
 
 - global presence control
 

src/gui/Utils.qml

@@ -434,9 +434,12 @@ QtObject {
 
         const magicNumber    = 2.5
         const normalDecel    = flickable.flickDeceleration
+        const normalMaxSpeed = flickable.maximumFlickVelocity
         const fastMultiply   =
             pages && multiplier / (1 - Math.log10(Math.abs(pages)))
 
+        flickable.maximumFlickVelocity = 5000
+
         flickable.flickDeceleration = Math.max(
             goFaster ? normalDecel : -Infinity,
             Math.abs(normalDecel * magicNumber * pages),
@@ -447,6 +450,7 @@ QtObject {
 
         horizontal ? flickable.flick(flick, 0) : flickable.flick(0, flick)
 
+        flickable.maximumFlickVelocity = normalMaxSpeed
         flickable.flickDeceleration    = normalDecel
     }