Update to rails 3.2.13
Work around JSON encoding issue in rails 3.2.13
Reworked changeset list layout
Diary cleanup

This commit includes a few basic changes to make the user diaries
friendlier and easier to read. I adjusted the text styles and added
a maximum width, to keep the line length under control.
Display a map showing features mentioned in a diary entry

Scan diary entry body for osm feature refs, and display map
browse.js can now handle a list of features.