Mac OS X build thanks to @barryanders!
- Add option to keep image creation time (issue #49).
- Add custom folder option to custom filenames (issue #397).
- Conditional filenames now uses OR for multiple tags.
- 'Save as' button now remember last folder (issue #462).
- Fix missing language strings introduced in last version (issue #463).
- Add JavaScript filename checking (issue #213).
- Add date support to JavaScript filenames.