[bkiziuk]

I added two new configuration options. The first one should prevent search dialog from opening if local unprocessed subtitles are found.
The second one will trigger conversion for any subtitle file on disk matching video file being played regardless its creation time.
This, however, has a drawback that if you have more than one subtitle file for a video (for example in .srt and .sub format), the routine will be triggered for every file, with the next resulting file overwriting the previous one.
Both options are off by default, so they will need to be enabled by hand.
There is still some more testing to be done. It should happen before the weekend. Once completed, I will push the new version to repo.

EDIT: new build is online
v0.0.15 (2018-02-23)
- added ability to convert local subtitle files accompanying played video file
- added Hungarian UI language