remove misplaced label "0°S" in Decimal case in the west (reverts part of commit 3a781acb5d35691e7b2232498c5b6d6d7903bca4)
avoid overlapping of longitude labels in some cases (regression of commit f1b4db185111e9c23a7e7338176fee3171cf48de)

When the whole earth was visible, the lower longitude labels in Degree mode were overlapping.
This patch restores the old if clauses since the new ones (itStep != 0.0 || itStep != 180.0) always evaluate to true for any itStep.
determine notation for labels just once
remove unneeded method call

The method call immediately returns here since there's no dialog yet.
Make 'not available' translatable
Make labels with plurals translatable

see: http://mail.kde.org/pipermail/marble-devel/2012-November/003420.html
Make the strings extractable. Scripty cannot extract from tr() with a comment
bump version numbers for beta 2
load measure point marker from resource
Remove extra dot
Allow for labels in GeoLineStringGraphicsItem.
GraticulePlugin: Use GeoGraphicsItems for rendering the grid
factor out ScreenLayer from GeometryLayer
wip idis
GeoGraphicsScene
always create a canvas image in texture mappers
GeoPainter::mapTexture()
const'ify
remove ViewportParams parameter from MarbleGraphicsItem::paintEvent()
const'ify changeViewport()