devel: Restructured the project (part 1)

- Black box optimisation problems are now found under
/optimisationProblem/benchmark/bbob2013/...
devel: Restructured the project (part 2)

Plots are not part of the C++ code anymore but provided as Python
scripts
devel: Restructured the project (part 3)

The config file got removed as well (no gnuplot, no config needed)
devel: Restructured the project (part 4)

Removed the command line interface
devel: Restructured the project (part 5)

Evaluation binaries are now located unter /apps
devel: Restructured the project (part 6)

devel: Added serialisation support on evaluation classes
devel: Restructured the project (part 7)

Replaced CEREAL_NVP with cereal::make_nvp to decuple the names of class
variables from the serialised string
devel: Restructured the project (part 8)

Tests are now automatically performed as part of the build process
devel: Restructured the project (part 9)

No need to explicitly call libTest anymore (see previous commit)
Merge remote-tracking branch 'origin/C++-rebuild' into C++-rebuild