TrelloExport fork 1.8.8

1. export Trello Plus Spent and Estimate values, extracting values from
card titles in format (S/E)
2. export comments (with a default limit of 100, see commentLimit in
script)
3. export checklists and checklists' items
4. export list of attachments
5. export a link to each card
6. export votes
7. use updated version of xlsx.js, modified by me (escapeXML)
8. use updated version of jquery, 2.1.0
9. use usernames instead of initials for members