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/ThemeTest.qml

@@ -0,0 +1,72 @@
+import QtQuick 2.5
+import QtQuick.Layouts 1.1
+
+GridLayout {
+	id: themetest
+	columns: 2
+
+	Label {
+		Layout.columnSpan: 2
+		Layout.fillHeight: true
+		text: "Theme Information"
+	}
+
+	FontMetrics {
+		id: fm
+	}
+
+	Label {
+		text: "units.gridUnit:"
+	}
+	Label {
+		text: units.gridUnit
+	}
+
+	Label {
+		text: "units.devicePixelRatio:"
+	}
+	Label {
+		text: units.devicePixelRatio
+	}
+
+	Label {
+		text: "FontMetrics pointSize:"
+	}
+	Label {
+		text: fm.font.pointSize
+	}
+
+	Label {
+		text: "FontMetrics pixelSize:"
+	}
+	Label {
+		text: fm.height
+
+	}
+
+	Label {
+		text: "hand-computed devicePixelRatio:"
+	}
+	Label {
+		text: fm.height / fm.font.pointSize
+	}
+
+	Text {
+		text: "Text item pixelSize:"
+	}
+	Text {
+		text: font.pixelSize
+	}
+
+	Text {
+		text: "Text item pointSize:"
+	}
+	Text {
+		text: font.pointSize
+	}
+
+	Label {
+		Layout.columnSpan: 2
+		Layout.fillHeight: true
+	}
+}