Use two digits for hours in SRT timecodes
I don't know the rationale for using only one digit before (H:MM:SS,FFF). I apologize in advance if I somehow break something.
As mentioned in the bug report, most applications use the format HH:MM:SS,FFF and do not support the previously used output format (e.g. tested with Subtitle Composer and VLC).
Import and Export still work, both with the previous and current format.
Edited by Jan Paul Batrina