Setup now installs in 64-bit mode if available
Displaying loaded file prefix and directory in window title
Prevent loading the currently written-to log files
Added user-writable log directory with setup

Also fixed own-log opening prevention (8f30d679) if the own log is opened through the command line.
Added toolbar options to AppSettings and bound MainViewModel properties to them for automatic update
Added indent size buttons to the toolbar, backed by AppSettings
Added multi-threading to demo app; Other small changes
Setup deletes FieldLogViewer log files on uninstall