mess with int and string on mintepoch

[Pablo Casas Estévez]

error encountered on runtime:

Traceback (most recent call last):
File "Shotwell_event2folder.py", line 911, in
TimeOriginalEpoch, decideflag = mediainfo (Filepath, assignstat)
File "Shotwell_event2folder.py", line 557, in mediainfo
if mintepoch < yearfound < '2038':
TypeError: '<' not supported between instances of 'int' and 'str'

mintepoch needs to be a string

[Pablo Casas Estévez]

Fixed.