* Added a few doxygen comments to forwards.h
* Added LaTeX documentation
Added half of the LaTeX documentation.
Completed Doxygen comments
Added external linkage tests
Cleaned up source code structure a bit
Many more final polishing of examples and sources. Essentially ready for release, just some more final tests at home.
Fixed a last bug in LaTeX processor. Release 1.0.0 done. :-)
updated latex logging of "weak form of a cell":
  switched from latex align environment to $ math environemnt -
  otherwise, the weak formulation is cut-off at the right page border ...
minor latex output pimp:
  added newline before and after weak cell formulation
updating git repo chain
Eliminated all warnings when using -Wextra.
including the required Vienna Projects in the CMakeLists

this is now the same approach as with ViennaFVM
added gitignore
first part of viennagrid update done: including viennafem/fem.hpp works
viennagrid update: good progress-problems with dtdx_interval.hpp:{46,47} and cell_quan with cell_quan and ViennaData's storage object
fixed accessor problem in dtdx_*

turns out, that the lesser operator overload required for a ViennaData key has to be
implemented outside of the class, not inside ...
viennagrid update: had to deactivate the log mechanism ..

don't know how to forward a storage object there in a proper manner
ViennaData update: reactivated log utiliziation for debuggin ...
deactivated test script
almost finished with ViennaGrid/Data update-one problem left ->

cell_quan cannot be used in ViennaMath expressions, ala
   viennafem::cell_quan<CellType, InterfaceType>  dr_dx;
   replace_types[0] = viennamath::diff(u, r) * dr_dx; // -> error

error msg:
   /home/weinbub/git/ViennaFEM/../ViennaMath/viennamath/runtime/operations/rt_rt.hpp:102:190: error: no matching function for call to ‘clone(const
viennafem::cell_quan<viennagrid::element_t<viennagrid::simplex_tag<1l>, viennagrid::config::line_1d>, viennamath::rt_expression_interface<double> >&)’
updated viennadata::accessor -> viennadata::make_accessor
Removed trailing whitespace from sources (C++ and LaTeX)