qml: Add validators to address and amount inputs to limit characters

Author: johnny9

src/qml/controls/LabeledTextInput.qml

@@ -13,6 +13,7 @@ Item {
     property alias iconSource: icon.source
     property alias customIcon: iconContainer.data
     property alias enabled: input.enabled
+    property alias validator: input.validator
 
     signal iconClicked
     signal textEdited

src/qml/pages/wallet/Send.qml

@@ -179,6 +179,9 @@ PageStack {
                         placeholderText: qsTr("Enter address...")
                         text: root.recipient.address
                         onTextEdited: root.recipient.address = address.text
+                        validator: RegExpValidator {
+                            regExp: /^[1-9A-HJ-NP-Za-km-zac-hj-np-z02-9]+$/
+                        }
                     }
 
                     RowLayout {
@@ -244,6 +247,10 @@ PageStack {
                                     root.recipient.amount.format()
                                 }
                             }
+                            validator: RegExpValidator {
+                                regExp: /^(0|[1-9]\d*)(\.\d{0,8})?$/
+                            }
+                            maximumLength: 17
                         }
                         Item {
                             width: unitLabel.width + flipIcon.width