Use sed for all the pages on dokuwiki

Usage:

dokuwiki-sed-all-pages.sh <dokuwiki path> <username> <sed script> <commit message>   

Description:

Apply <sed script> for all pages in <dokuwiki path> and commit changes as <username> with <commit message>

Example:

./dokuwiki-sed-all-pages.sh /var/www/dokuwiki my_name 's/Hate you/Love you/g' 'Changed mind'

Note: nkf needs to be installed for pages that have non ASCII UTF-8 characters in their names.