Merge pull request #46 from mlund/master

merge w master
Cleanup, geometry
Merge pull request #2 from mlund/master

merge w. mikael
Documentation; initial git version detection in cmake
Tables, penalty functions, penalty energy, gyration tensor, scale volume type Z, flip-flop move, size-dependent DH potential, penalty example
Added SASA energy class incl. implementation into
playground/heyda/polymers.cpp
ifdef MPI, corrections in Tables
Mean and Standard Deviation in Table2D
Mean and Standard Deviation in from histograms Table2D
corrections in tables and penalty functions + c-o-m trigonometric calculation
Isochoric move, Waste-recycle.
corrections in penalty function and penalty energy
Added manybody class for angles, dihedrals; NDEBUG removed from compiler
w. RelWithDebInfo in Cmake; Fixed stockmayer test target hang due;
updated docs
Merge pull request #50 from mlund/develop

pull in develop
Documentation
Merge pull request #51 from mlund/develop

Documentation
shuffle to ease pull req. from Giulio
penalty tests and example
silly bug fixed
documentation; const correctness