Addes tests for GML file writing and reading
deleted temp files
Addes tests for GML file writing and reading
Bug fix for inserting point at pos zero.
deleted temp files
If vec to sort is empty do not access first elem.
Merge branch 'GMLTest' of github.com:rinkk/ogs into GMLTest

Conflicts:
	Tests/BaseLib/TestQuicksort.cpp
fixed error in strictdoublevalidator concerning negative values
Merge branch 'master' of https://github.com/ufz/ogs
added functionality for replacing and compressing mesh element values
mesh value editing functionality is now available in the gui
Remove default template argument in generateRandomPoints().
just a few changes to make the code look better (nullptr, for each loops, etc.
removed range-based loops again as they seem not to be supported by msvs2010
added <algorithm>-header for using std::sort method
Updated export submodules.
Fixing bug in merging geometries functionality.

Removing unused objects.
Removing the AABB object in destructor.
Fixing a memory leak in OGS4 geometries reader.
split up MshEditor class