organize qml files in subdirectories

This makes the organization of the qml files a bit more fine-grained, it
prevents mixing of .cpp and QML files, and also of what's compiled, and
what's included in the app as qrc data.

In particular:
- subsurface specific QML items go into the qml/ subdirectory
- theme and unit definitions to into qml/theme subdirectory (they
  already were located in a theme directory)
- generic components, such as our Label goes into qml/components

This facilitates sharing of functionality and identifying common stuff
better. Ideally, we can pull qml/theme and qml/components from a
standardized set at some point, so we don't have to maintain that code.

Signed-off-by: Sebastian Kügler <sebas@kde.org>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

qt-mobile/qml/TopBar.qml

@@ -0,0 +1,67 @@
+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.subsurfacedivelog.mobile 1.0
+
+Rectangle {
+	id: topBar
+	color: theme.accentColor
+	Layout.fillWidth: true
+	Layout.margins: 0
+	Layout.minimumHeight: prefsButton.height + units.smallSpacing * 2
+	RowLayout {
+		anchors.bottom: topBar.bottom
+		anchors.bottomMargin: units.smallSpacing
+		anchors.left: topBar.left
+		anchors.leftMargin: units.smallSpacing
+		anchors.right: topBar.right
+		anchors.rightMargin: units.smallSpacing
+		Button {
+			id: backButton
+			Layout.maximumHeight: prefsButton.height
+			Layout.minimumHeight: prefsButton.height
+			Layout.preferredWidth: units.gridUnit * 2
+			text: "\u2190"
+			style: ButtonStyle {
+				background: Rectangle {
+					color: theme.accentColor
+					implicitWidth: units.gridUnit * 2
+				}
+				label: Text {
+					id: txt
+					color: theme.accentTextColor
+					font.pointSize: 18
+					font.bold: true
+					text: control.text
+					horizontalAlignment: Text.AlignHCenter
+					verticalAlignment: Text.AlignVCenter
+				}
+			}
+			onClicked: {
+				if (stackView.currentItem.objectName == "DiveDetails")
+				{
+				manager.commitChanges(
+							dive_id,
+							suit,
+							buddy,
+							divemaster,
+							notes
+							)
+				}
+				stackView.pop();
+			}
+		}
+		Text {
+			text: qsTr("Subsurface mobile")
+			font.pointSize: 18
+			color: theme.accentTextColor
+			anchors.left: backButton.right
+			anchors.leftMargin: units.smallSpacing
+			//horizontalAlignment: Text.AlignHCenter
+		}
+	}
+}