Re-write the way long_link_phrase is used in edits

Now the edits have changed schema to use 'long_link_phrase' and have 'before'
subroutine that renames 'short_link_phrase' into 'long_link_phrase' to remain
compatible with the new schema.

I also found a few more occurances of 'short_link_phrase', so I've also renamed
them to 'long_link_phrase'.