Apply fixes for the ui jobs.

- Localization
- Mutual exclusion (ExclusiveJobGroup), only one UI job can run at a time, and background processing is stopped
- m_range not used for finalization anymore
- stop_jobs called before Window is closed

src/libslic3r/MTUtils.hpp

@@ -5,6 +5,7 @@
 #include <mutex>        // for std::lock_guard
 #include <functional>   // for std::function
 #include <utility>      // for std::forward
+#include <algorithm>
 
 namespace Slic3r {
 
@@ -182,6 +183,14 @@ public:
     inline bool empty() const { return size() == 0; }
 };
 
+template<class C> bool all_of(const C &container) {
+    return std::all_of(container.begin(),
+                       container.end(),
+                       [](const typename C::value_type &v) {
+                           return static_cast<bool>(v);
+                       });
+}
+
 }
 
 #endif // MTUTILS_HPP