Improved installation of the toolbox

Now all the resources needed by MATLAB are properly installed and are no longer in the build tree.
Now the library is properly loaded by simulink

Added a 2014b compatible version to the repository
Updated to use variable for share folder
Updated documentation

Also moved all library dependent stuff into libraries and updated CMake accordingly
Merged with recent changes in new_wbi_ID
Added robots dir
Added helper files for urdf-dependent masks
Merge branch 'new_wbi_ID' of https://github.com/robotology-playground/WBI-Toolbox into new_wbi_ID
Merge branch 'new_wbi_ID' of https://github.com/robotology-playground/WBI-Toolbox into new_wbi_ID