Refactor global shortcuts, simplify debug consoles

- Move out all shortcuts from their central file to the component they
  actually belong to

- Get rid of DebugConsoleLoader and the multiple consoles handling mess,
  have only one global console

src/gui/Pages/Chat/Timeline/EventContent.qml

@@ -65,17 +65,9 @@ HRowLayout {
     // ~600px max with a 16px font
     readonly property int maxMessageWidth: theme.fontSize.normal * 0.5 * 75
 
-    readonly property alias debugConsoleLoader: debugConsoleLoader
-
     readonly property alias selectedText: contentLabel.selectedText
 
 
-    DebugConsoleLoader {
-        id: debugConsoleLoader
-        active: false
-        onLoaded: item.runJS("json()")
-    }
-
     Item {
         id: avatarWrapper
         opacity: collapseAvatar ? 0 : 1

src/gui/Pages/Chat/Timeline/EventDelegate.qml

@@ -221,7 +221,11 @@ HColumnLayout {
         HMenuItem {
             icon.name: "debug"
             text: qsTr("Debug this event")
-            onTriggered: eventContent.debugConsoleLoader.toggle()
+            onTriggered: {
+                mainUI.debugConsole.visible = true
+                mainUI.debugConsole.target  = eventContent
+                mainUI.debugConsole.runJS("t.parent.json()", false)
+            }
         }
 
         HMenuItemPopupSpawner {

src/gui/Pages/Chat/Timeline/EventList.qml

@@ -6,6 +6,7 @@ import QtQuick.Window 2.12
 import Clipboard 0.1
 import "../../.."
 import "../../../Base"
+import "../../../ShortcutBundles"
 
 Rectangle {
     color: theme.chat.eventList.background
@@ -56,6 +57,23 @@ Rectangle {
             eventList.currentItem.eventContent.debugConsoleLoader.toggle()
     }
 
+    HShortcut {
+        sequences: window.settings.keys.clearRoomMessages
+        onActivated: utils.makePopup(
+            "Popups/ClearMessagesPopup.qml",
+            mainUI,
+            {
+                userId: window.uiState.pageProperties.userId,
+                roomId: window.uiState.pageProperties.roomId,
+            }
+        )
+    }
+
+    FlickShortcuts {
+        flickable: eventList
+    }
+
+
     HListView {
         id: eventList
         clip: true
@@ -109,8 +127,6 @@ Rectangle {
         // fetch past events.
         onInviterChanged: canLoad = true
 
-        Component.onCompleted: shortcuts.flickTarget = eventList
-
 
         property string inviter: chat.roomInfo.inviter || ""
         property real yPos: visibleArea.yPosition