Change HTextField borders, SignIn disable buttons

By default now, fields have a transparent border if not focused and
accent-color border if focused.
Set `bordered: false` for no border at all.

The register and forgot buttons on the SignIn screen are now disabled,
since their functions aren't implemented yet.

src/qml/Base/HInterfaceBox.qml

@@ -52,6 +52,7 @@ HScalingBox {
                     id: button
                     text: modelData.text
                     iconName: modelData.iconName || ""
+                    enabled: modelData.enabled === false ? false : true
                     onClicked: buttonCallbacks[modelData.name](button)
 
                     Layout.fillWidth: true

src/qml/Base/HLabeledTextField.qml

@@ -16,7 +16,6 @@ Column {
 
     HTextField {
         id: textField
-        bordered: true
         radius: 2
         width: parent.width
     }

src/qml/Base/HTextField.qml

@@ -11,7 +11,7 @@ TextField {
 
     readonly property QtObject _tf: theme.controls.textField
 
-    property bool bordered: false
+    property bool bordered: true
     property color backgroundColor: _tf.background
     property color borderColor: _tf.border
     property color focusedBackgroundColor: _tf.focusedBackground

src/qml/Chat/RoomSidePane/MembersView.qml

@@ -43,6 +43,7 @@ HColumnLayout {
         id: filterField
         placeholderText: qsTr("Filter members")
         backgroundColor: theme.sidePane.filterRooms.background
+        bordered: false
 
         Layout.fillWidth: true
         Layout.preferredHeight: theme.baseElementsHeight

src/qml/Pages/SignIn.qml

@@ -17,9 +17,9 @@ Item {
         enterButtonTarget: "login"
 
         buttonModel: [
-            { name: "register", text: qsTr("Register") },
-            { name: "login", text: qsTr("Login") },
-            { name: "forgot", text: qsTr("Forgot?") }
+            { name: "register", text: qsTr("Register"), enabled: false },
+            { name: "login", text: qsTr("Login"), enabled: true },
+            { name: "forgot", text: qsTr("Forgot?"), enabled: false }
         ]
 
         buttonCallbacks: ({

src/qml/SidePane/AccountDelegate.qml

@@ -54,6 +54,7 @@ Column {
                     placeholderText: qsTr("Set status message")
                     font.pixelSize: theme.fontSize.small
                     background: null
+                    bordered: false
 
                     padding: 0
                     leftPadding: accountLabel.leftPadding

src/qml/SidePane/PaneToolBar.qml

@@ -22,6 +22,7 @@ HRowLayout {
         id: filterField
         placeholderText: qsTr("Filter rooms")
         backgroundColor: theme.sidePane.filterRooms.background
+        bordered: false
 
         Layout.fillWidth: true
         Layout.preferredHeight: parent.height

src/qml/Theme.qml

@@ -62,7 +62,7 @@ QtObject {
 
         property QtObject textField: QtObject {
             property color background: colors.background2
-            property color border: "black"
+            property color border: "transparent"
             property color focusedBackground: background
             property color focusedBorder: colors.accent
             property int borderWidth: 1