Removed trailing whitespaces with

```sh
for file in `grep -r " $" * | cut -d : -f 1 | sort | uniq | grep -v " "`; do sed -i 's/[ \t]*$//' $file; done
```

and some handwork.

Make `#attached-list` attachment labels wrap, make spacing more
consistent, add hover stats to `.attachment-remove` icon, adjust
padding of labels to compensate for `.attachment-remove` icon