logic: Added indexing mode to reindex incomplete files (issue #493, #496)

* added radio buttons to start indexing dialog
* don't block task scheduler thread while start indexing dialog is visible
* don't force whole project refresh on settings change
* added help button to start indexing dialog explaining indexing modes
* disable unavailable modes when project needs full refresh
* improved label texts on indexing dialogs
* added --incomplete flag to index command of commandline API
* fixed deletion of window stack elements

src/app/main.cpp

@@ -270,7 +270,8 @@ int main(int argc, char *argv[])
 		{
 			MessageLoadProject(
 				commandLineParser.getProjectFilePath(),
-				commandLineParser.getFullProjectRefresh()
+				false,
+				commandLineParser.getRefreshMode()
 			).dispatch();
 		}
 
@@ -320,7 +321,8 @@ int main(int argc, char *argv[])
 		{
 			MessageLoadProject(
 				commandLineParser.getProjectFilePath(),
-				commandLineParser.getFullProjectRefresh()
+				false,
+				commandLineParser.getRefreshMode()
 			).dispatch();
 		}