Make it compile on OSX 10.9.5 (clang-600.0.54 based on LLVM 3.5svn)

- std::make_unique is not available in c++11, only in c++14.
  Provide a c++11 implementation in base/core/utilsCPP1.hpp
- resolve linking problems by adding "-undefined dynamic_lookup"
  to link command
- CMake 3.0 should be used ("set(CMAKE_AUTOUIC ON)" did not work correcly with CMake 2.8.12.2).
  TODO: change cmake_minimum_required deirectives in all CMakeLists.txt files.

- Do not use "using namespace" in headers ! Never.
 correct base/core/presenter/command/Command.hpp
Merge branch 'dev' of https://github.com/OSSIA/i-score into dev
Merge branch 'dev' of https://github.com/OSSIA/i-score into dev
correct warning: m_presenter was built with not yet initialized m_view
correct warnings: add missing return nullptr