Check unsaved changes (#6991)

* Check Unsaved changes (partially related to #5903)
 + Allow create new project when Plater is empty, but some of presets are modified (related to #5903)
 + When creating new project allow Keep or Discard modification from previous project
 + Added check of changes:
    * before any load project (including DnD and "Load From Recent Projects")
    * before preset updater
    * when configuration is changing from the ConfigWizard
 + Dialog caption is added for each check

 + Create/Destroy ConfigWizard every time when it's called

* Check Unsaved changes: Next Improvements
 + For dialog "Save project changes" added a reason of saving and name of the current project (or "Untitled")
 + UnsavedChangesDialog: Headers are extended to better explain the reason
 + Preferences: Fixed tooltiops for "Always ask for unsaved changes when..."
 + Suppress "Remember my choice" checkbox for actions which are not frequently used

* Fixed behavior of the application when try to save changed project but "Cancel" button is selected in "Save file as..." dialog

* Check unsaved changes: Improvements for Config Wizard - Check all cases when presets should be updated
 + Fixed info line for Materials pages. Text of the info relates to the printer technology now

* Improved suggested name for a project when Application is closing

* Fixed Linux/OSX build warnings

1 files changed, 3 insertions, 0 deletions

diff --git a/src/libslic3r/AppConfig.cpp b/src/libslic3r/AppConfig.cpp
index 177d8d708..f3a1d5988 100644
--- a/src/libslic3r/AppConfig.cpp
+++ b/src/libslic3r/AppConfig.cpp
@@ -139,6 +139,9 @@ void AppConfig::set_defaults()
         if (get("default_action_on_select_preset").empty())
             set("default_action_on_select_preset", "none");     // , "transfer", "discard" or "save" 
 
+        if (get("default_action_on_new_project").empty())
+            set("default_action_on_new_project", "none");       // , "keep(transfer)", "discard" or "save" 
+
         if (get("color_mapinulation_panel").empty())
             set("color_mapinulation_panel", "0");