Various ui fixes on wallet

- Show scrollbars in asset list if needed
- Show scrollbars in account list if needed
- Fix margin between assets
- Add symbol to asset amounts
- Stop scrolling at element bounds

ui/app/AppLayouts/Wallet/AssetsTab.qml

@@ -1,4 +1,6 @@
 import QtQuick 2.13
+import QtQuick.Layouts 1.3
+import QtQuick.Controls 2.14
 import "../../../imports"
 import "../../../shared"
 
@@ -48,7 +50,7 @@ Item {
             }
             StyledText {
                 id: assetValue
-                text: value.toUpperCase()
+                text: value.toUpperCase() + " " + symbol
                 anchors.right: parent.right
                 anchors.rightMargin: 0
                 font.pixelSize: 15
@@ -79,13 +81,22 @@ Item {
         }
     }
 
+    ScrollView {
+        anchors.fill: parent
+        Layout.fillWidth: true
+        Layout.fillHeight: true
+        ScrollBar.horizontal.policy: ScrollBar.AlwaysOff
+        ScrollBar.vertical.policy: assetListView.contentHeight > assetListView.height ? ScrollBar.AlwaysOn : ScrollBar.AlwaysOff
+
         ListView {
             id: assetListView
-        spacing: Style.current.halfPadding
+            spacing: Style.current.padding * 2
             anchors.fill: parent
-//        model: exampleModel
+    //        model: exampleModel
             model: walletModel.assets
             delegate: assetViewDelegate
+            boundsBehavior: Flickable.StopAtBounds
+        }
     }
 }
 /*##^##

ui/app/AppLayouts/Wallet/HistoryTab.qml

@@ -224,6 +224,7 @@ Item {
         height: parent.height - extraButtons.height
         width: parent.width
         clip: true
+        boundsBehavior: Flickable.StopAtBounds
         model: walletModel.transactions
         delegate: transactionListItemCmp
         ScrollBar.vertical: ScrollBar {

ui/app/AppLayouts/Wallet/LeftTab.qml

@@ -152,14 +152,23 @@ Item {
         }
     }
 
-    ListView {
+    ScrollView {
-        id: listView
         anchors.bottom: parent.bottom
         anchors.top: walletValueTextContainer.bottom
         anchors.topMargin: Style.current.padding
-        spacing: 5
         anchors.right: parent.right
         anchors.left: parent.left
+        Layout.fillWidth: true
+        Layout.fillHeight: true
+        ScrollBar.horizontal.policy: ScrollBar.AlwaysOff
+        ScrollBar.vertical.policy: listView.contentHeight > listView.height ? ScrollBar.AlwaysOn : ScrollBar.AlwaysOff
+
+        ListView {
+            id: listView
+
+            spacing: 5
+            anchors.fill: parent
+            boundsBehavior: Flickable.StopAtBounds
 
             delegate: walletDelegate
 
@@ -189,7 +198,7 @@ Item {
             model: walletModel.accounts
             //        model: exampleWalletModel
         }
-
+    }
 }
 
 /*##^##

ui/app/AppLayouts/Wallet/components/SetCurrencyModalContent.qml

@@ -25,6 +25,7 @@ Item {
         id: tokenListView
         model: Currencies {}
         ScrollBar.vertical: ScrollBar { active: true }
+        boundsBehavior: Flickable.StopAtBounds
         
         delegate: Component {
             Item {