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/components/Label.qml

@@ -0,0 +1,11 @@
+import QtQuick 2.5
+//import QtQuick.Controls 1.2 as QuickControls
+import QtQuick.Window 2.2
+import QtQuick.Dialogs 1.2
+import QtQuick.Layouts 1.1
+
+Text {
+
+	font.pointSize: 18
+	color: theme.textColor
+}