* split QtDirectoryListBox and QtStringListBox
* renamed QtDirectoryListBox to QtPathListBox
* extracted QtListItemWidget class to own file
* renamed QtListItemWidget to QtListBoxItem
* added SelectionPolicyType to QtPathListBox to allow for specifying if selecting files, directories or both should be allowed.
* use wstring in symbol and bookmark names
* fixed setting apppath in windows includes
* regard utf8 encoding in shared indexer commands
* regard utf8 encoding in shared indexer status
* removed header paths from VS Project setup message since VS doesn't send these anymore
* implemented using wstring in IDE communication
* fixed retrieving filepaths from QtDirectoryListbox that contain special characters
* use wstring for source extensions
* added special character as file extension to FileManagerTestSuite
* used wstring in FilePath constructor where easily possible
* added FilePath concatenate method that accepts string parameter
* implemented using only wstring in MessageStatus
* used wstring in config
* don't reset filepath used to open file picker dialog for SaveFileDialog
* don't reset filepath used to open filepicker for OpenProject dialog
* fixed non-native file picker starts in wrong directory if provided with filename to open (instead of directory)
* fixed non-native dialog displays machines root directory if empty path is provided
* also search for include paths of include directives extracted from header search paths
* extracted logic to gather unsolved includes
* extracted some code to filetree class
* fixed gaps in code view line indication for different fonts
* only allow latin fonts in fontpicker
* don't show 'files to clear' for full refresh
* fixed screen scale settings were visible on all platforms
* Set environment variables QT_AUTO_SCREEN_SCALE_FACTOR and QT_SCALE_FACTOR on Linux on app start
* Added ScreenAutoScaling and ScreenScaleFactor to ApplicationSettings with dropdown boxes in the preferences
only visible on Linux
* Removed QtFontPicker and QtTextEncodingPicker
* Moved logging into preferences category "output"
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* improves indexing performance by roughly 5%
* switched to use uniqu_ptr for boost path to get rid of including boost in header
* added different methods to change the current FilePath or to make a copy and change that one
* used these methods appropriately throughout the code base
* removed exists() method from FileSystem because it is already contained in FilePath
* added const in some places
* slightly darker function color in code for bright scheme
* fixed title offset in indexing progress dialog
* show progress dialog while starting indexers
* fixed text covered by flag in finish indexing dialog