When try to delete something from the cut object, than not just inform the users about an impossibility of this action,
but allow them to invalidate a cut information or delete all connectors from related objects, but leave the cut info.
* import updates from curling avoidance branch
* fix compilation issues
* Refactoring FDM support spots generator to use the new Z-graph built during slicing
* fix local issues bugs
* fix bugs, add new filter for too short extrusions
* fix bugs with nonexistent weakest area
* Use links of Z graph after fix, format the code
* remove unnecesary includes
../src/libslic3r/Format/3mf.cpp:686:37: error: 'path' is not a member of 'boost::filesystem'; did you mean 'boost::property_tree::path'?
../src/libslic3r/Format/3mf.cpp:2437:32: error: 'remove' is not a member of 'boost::filesystem'
../src/libslic3r/Format/3mf.cpp:2445:36: error: 'remove' is not a member of 'boost::filesystem'
../src/libslic3r/Format/3mf.cpp:2455:32: error: 'remove' is not a member of 'boost::filesystem'
../src/libslic3r/Format/3mf.cpp:2464:32: error: 'remove' is not a member of 'boost::filesystem'
../src/libslic3r/Format/3mf.cpp:2473:32: error: 'remove' is not a member of 'boost::filesystem'
../src/libslic3r/Format/3mf.cpp:2482:32: error: 'remove' is not a member of 'boost::filesystem'
../src/libslic3r/Format/3mf.cpp:2491:32: error: 'remove' is not a member of 'boost::filesystem'
../src/libslic3r/Format/3mf.cpp:2500:32: error: 'remove' is not a member of 'boost::filesystem'
../src/libslic3r/Format/3mf.cpp:2506:32: error: 'remove' is not a member of 'boost::filesystem'
../src/libslic3r/Format/3mf.cpp:2515:32: error: 'remove' is not a member of 'boost::filesystem'
../src/libslic3r/Format/3mf.cpp:2524:36: error: 'remove' is not a member of 'boost::filesystem'
../src/libslic3r/Format/3mf.cpp:2535:32: error: 'remove' is not a member of 'boost::filesystem'
../src/libslic3r/Format/3mf.cpp:2541:32: error: 'remove' is not a member of 'boost::filesystem'
../src/libslic3r/Format/3mf.cpp:2650:62: error: 'path' is not a member of 'boost::filesystem'; did you mean 'boost::property_tree::path'?
../src/libslic3r/Format/3mf.cpp:3315:129: error: 'path' is not a member of 'boost::filesystem'; did you mean 'boost::property_tree::path'?
Fixes Slicing slows or hangs on "Generating Permiters 20%" cpu load is at 100% #8164
Fixes Slicing hangs on generating perimeters with thing:3565827 (30g) #3259
