Captions in geometry structure

fixes #40

See merge request !1

fixes #40

-FIXME: Code does NOT compile with Qt5. Some widget-issues

proper scaling of the labels and relaxed checks  while parsing the geometry. Meaning some geometry will be displayed even if there were errors, the simulation will not run though. This eases debugging.

The previous version always assume a frame starting at 0.

feature to individually change attribute of the geometry, e.g different floor colors for different subrooms.
Only the elements (colors,visibilty,walls..) of the selected subrooms will be changed. First select the room/subroom in the geometry structure view