Allow changing mission after initial selection

TouchGFX/gui/src/common/FrontendApplication.cpp

@@ -3,6 +3,14 @@
 #include "gui/common/NamedField.hpp"
 
 FrontendApplication::FrontendApplication(Model &m, FrontendHeap &heap)
-    : FrontendApplicationBase(m, heap) {
+    : FrontendApplicationBase(m, heap), backToMissionSelect(false) {
   namedFieldSort();
 }
+
+void FrontendApplication::setBackToMissionSelect(bool backToMissionSelect) {
+  this->backToMissionSelect = backToMissionSelect;
+}
+
+bool FrontendApplication::getBackToMissionSelect() const {
+  return backToMissionSelect;
+}