Add correct formatting of shutter speed
Only load image files when getting all images
Do image processing in series instead of parallel

To prevent Node.js crashes when too many files are open
Backend editor defaults to blog post
Redirect to post anchor after updating
Don't try and format date if it isn't one
Redirect to post anchor after updating
Backend editor defaults to blog post
Remove trailing slash
Render Markdown in excerpts too; move Markdown processing to posts model