Move subsurface-core to core and qt-mobile to mobile-widgets

Having subsurface-core as a directory name really messes with
autocomplete and is obviously redundant. Simmilarly, qt-mobile caused an
autocomplete conflict and also was inconsistent with the desktop-widget
name for the directory containing the "other" UI.

And while cleaning up the resulting change in the path name for include
files, I decided to clean up those even more to make them consistent
overall.

This could have been handled in more commits, but since this requires a
make clean before the build, it seemed more sensible to do it all in one.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

mobile-widgets/qml/TopBar.qml

@@ -0,0 +1,59 @@
+import QtQuick 2.3
+import QtQuick.Controls 1.2
+import QtQuick.Controls.Styles 1.2
+import QtQuick.Window 2.2
+import QtQuick.Dialogs 1.2
+import QtQuick.Layouts 1.1
+import QtQuick.Window 2.2
+import org.kde.kirigami 1.0 as Kirigami
+import org.subsurfacedivelog.mobile 1.0
+
+Rectangle {
+	id: topPart
+
+	color: subsurfaceTheme.accentColor
+	Layout.minimumHeight: Math.round(Kirigami.Units.gridUnit * 1.5)
+	Layout.fillWidth: true
+	Layout.margins: 0
+	RowLayout {
+		anchors.verticalCenter: topPart.verticalCenter
+		Item {
+			Layout.preferredHeight: subsurfaceLogo.height
+			Layout.leftMargin: Kirigami.Units.gridUnit / 4
+			Image {
+				id: subsurfaceLogo
+				source: "qrc:/qml/subsurface-mobile-icon.png"
+				anchors {
+					verticalCenter: parent.Center
+					left: parent.left
+				}
+				width: Math.round(Kirigami.Units.gridUnit)
+				height: width
+			}
+			Kirigami.Label {
+				text: qsTr("Subsurface-mobile")
+				font.pointSize: Math.round(Kirigami.Theme.defaultFont.pointSize)
+				height: subsurfaceLogo.height
+				anchors {
+					left: subsurfaceLogo.right
+					leftMargin: Math.round(Kirigami.Units.gridUnit / 2)
+				}
+				font.weight: Font.Light
+				verticalAlignment: Text.AlignVCenter
+				Layout.fillWidth: false
+				color: subsurfaceTheme.accentTextColor
+			}
+		}
+		Item {
+			Layout.fillWidth: true
+		}
+	}
+	MouseArea {
+		anchors.fill: topPart
+		onClicked: {
+			if (stackView.depth == 1 && showingDiveList) {
+				scrollToTop()
+			}
+		}
+	}
+}