Travis compiles with clang too.
Dont install Boost.
The OGS file converter is now called as an external application from the Tools menu
changed system call to work for win & linux
[GL] Renamed method getGEOObject to getGeoObject.
[GL] Changed getGeoObject implementation.

Added more checks and error messages.
Reuse existing GeoLib::convertGeoTypeToString.
[GL] Fixed merge mistake in GUI.

Rename getGEOObject to getGeoObject.
[GL] Remove duplicate error messages.
Merge pull request #303 from rinkk/CallFileConverter

Call file converter
when loading data sets into GUI, the respective pipeline items are now automatically selected and activated
filenames of imported vtk-files are now visible in the pipeline
renamed -active scalar- to -color by- in visualisation tab
Merge branch 'master' of https://github.com/ufz/ogs
added tooltips for visualisation options
[GeoLib] Corrected documentation.
[GeoLib] Test for merging geometries with names.
[GeoLib] SimplePolygonTree: added method getNChilds().
[FileIO] GMSHPolygonTree: corrected the case the recursion reached the leafes.
Merge pull request #305 from rinkk/VTKFileNameInPipeline

VTK filenames in pipeline