add object list style to policy history
split attribution out of version sentence on policy
add row to version list so that it takes up full width
pushed back attribution date
simplified version attribution copy
break version with multiple changes into separate sentences.

This is currently broken, as the changes arn't html_safe. Needs fix before merge.
removes redundant paragraph element
add paragraph tag for single sentence version.
Merge branch 'master' into policy_history_page
Use UTF-8 quotes instead of HTML entities
clarified wording on policy division changes.
added colon to make sentence not terrible if on all history page
remove strong emphasis from policy vote change notice.
Merge branch 'master' into policy_history_page
Revert "remove strong emphasis from policy vote change notice."

This reverts commit 82d8b12d3eb0ad23e897a49f934109594f02a990.
make history policy vote consistent with its display on divisions

adds colour, removes emphasis and capitalises vote
change connected/disconnected to Added/Removed

For policy division changes in history
add object list style on history page
added separate authorship style for division text change
Create vote_without_strong class method as a kind of helper

I *think* this makes sense to DRY up this method and allow it to be
used on other strings (that are still related to PolicyDivision).