Adaptable popup size

BUG: 317839
REVIEW: 109908
Add a popup() method to MapInfoDialog

REVIEW: 109921
BUG: 318057
Confirmation dialogs before removing items / clearing all annotations

REVIEW: 109944
BUG: 318106
Adjust to property name changes
Fix regressions introduced in 3ffc1aa and 38466a3
move panels menu from "View" to "Settings"

The panels correspond to the former sidebar, whose visibility could also be controlled through the settings menu.
Add a Recent Files menu

REVIEW: 109968
FEATURE: 310053
GUI:
generate the list of RenderPlugin::ThemeRenderType actions also in the KDE version

* it works this way in the Qt-only version since commit 449fac56fd3ce44c2cc3bf9b5f5d4a0a56fa7b2e
* also adds the stars visibility action
SVN_SILENT made messages (.desktop file)
KML NetworkLink Writer

REVIEW: 109988
BUG: 317836
Bookmarks: do not crash while changing visibility of folders

BUG: 317794
TreeModel: updateFeature should not change ordering
GeoGraphicsScene: use internal cache for geodatafeatures

During item change, one should not infer which was the TileId before
the update.
BUG: 314546
Clear the list of fetched WMS maps in map wizard when an user returns to the previous step
BUG: 318311
introduce MarbleView
introduce MarbleGLView
introcude GlLayerInterface
clear depth buffer between layer rendering
TextureLayer
PlacemarkLayer