index.php caption fixes
-> ignoring empty lines in captions.txt that caused crashes
+ using captions.txt over EXIF and file name
Merge pull request #45 from Lucas-C/master

index.php caption fixes
add basic OGV video support
 * work on https://github.com/sebsauvage/MinigalNano/issues/46
 * lightbox not supported yet, videos are just linked from the gallery page
Merge pull request #49 from nodiscc/video-support

add basic OGV video support