BK-1235 Add credit for Hungarian localization

Zsolt Magyar made the Hungarian translation. Also add Nicolas Dufour to credits for French translation.
Added another French contributor, thanks!
BK-1163 Aloha plugin to change font size
BK-1243 Remove embedded styles from editor templates
BK-1244 Disable JavaScript source maps for backbone
BK-1184 Show online users in the editor