* change in Build_Documentation control flow
* don’t Build_Documentation of deps if EXCLUDE_FROM_ALL
* export new APP4TRIQS_WITH_PYTHON_SUPPORT variable in config.cmake
-consistent indends in all cmake files
-add static analyzer checks with both cppcheck and clang-tidy
-add dynamic analyzer checks with Address Sanitizer and option ASAN
-add dynamic analyzer checks with Undefined Behavior Sanitizer and option UBSAN
-Further Cleaning and Comments