Minor improvements preventing date-time jump when setting changed
Correct direction arrows rendering for some files (Oscar)
Merge pull request #175 from Ptizef/master

Some grib_pi improvements
Update translations
Disable chart thumbnails explicitly on entering quilt mode.
Disallow application close if chart database update is in process.
Clarify "SART/PLB(AIS) MOB" message string in Options dialog.
Correct possible fault on cm93 offset dialog after chart switch.
Correct possible fault on route leg info rendering.
Correct a small variety of potential faults, identified by static analysis.
Language template update.
Improve accuracy of ENC LINE feature query select.
Beta 3.3.2302