Follow Qt coding conventions, and also split the item to
it's own .h & .cpp files for more pleasant maintenance.

Change-Id: I1c8915c738a8697097a9ab66a0e47bdef8b892bd
Reviewed-by: Ivan Vizir <define-true-false@yandex.com>
Reviewed-by: Caroline Chao <caroline.chao@digia.com>

Change-Id: I502258fba61b93cfa288507ca0c9825be4ab2b3f
Reviewed-by: J-P Nurmi <jpnurmi@digia.com>

Change-Id: Ic3fa14cf2e22e55ebf2aa10c8725b3d1a6569679
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
Reviewed-by: Jake Petroules <jake.petroules@petroules.com>

Change-Id: I7ccc0c601da5cebf1d36b3cd30de49fc27f07260
Reviewed-by: Jake Petroules <jake.petroules@petroules.com>
Reviewed-by: Ivan Vizir <define-true-false@yandex.com>
Reviewed-by: Kai Koehne <kai.koehne@digia.com>

Implemented the most widely used features and QML wrappers for them.

Change-Id: I0ac1b174b7f4eb355d097e71255e8d123141b369
Reviewed-by: Ivan Vizir <define-true-false@yandex.com>
Reviewed-by: Jake Petroules <jake.petroules@petroules.com>
Reviewed-by: Joerg Bornemann <joerg.bornemann@digia.com>
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>

Change-Id: I6bc571249fbc7cf440c2a2f6f430115075f31fcd
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>

Change-Id: Iba532311fdbcd2cb1aae46f0e275b330e499b599
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>

Change-Id: I787d3bcd2fee7c03c86ff5cf904fc0916ebb2cc1
Reviewed-by: Jake Petroules <jake.petroules@petroules.com>
Reviewed-by: Oliver Wolff <oliver.wolff@digia.com>

Change-Id: Ib3d7ca513254a117f69924a0f074692b4467447c
Reviewed-by: Ivan Vizir <define-true-false@yandex.com>
Reviewed-by: Oliver Wolff <oliver.wolff@digia.com>