Implement display blurring for overzoomed charts on OpenGL
Add missing file to .po scanner list.
Improve international font specification loading/scrubing from config file.
Clear and re-write font descriptor list in config file on exit.
Correct invalid LUP fault on some PlugIn ENC chart rendering.
Correct occasional fault adding last point on Track::Stop()
Remove repeated log messages on COMM port failure.
Correct course up/north up toggle by compass/GPS status icon click.