Implement rule AddDirectoryToHaikuImage in installoptionalpackage.

Fixes #9584.
Whitespace cleanup. No functional change.
Fix signature duplication of printer drivers

Signed-off-by: Matt Madia <mattmadia@gmail.com>
Fix translation for "Scroll bar:" on Look and Feel panel.

Signed-off-by: Matt Madia <mattmadia@gmail.com>
Printserver: Add JIS B5 paper size

Signed-off-by: Matt Madia <mattmadia@gmail.com>
Add Cc: text field to mails shown when it's not empty.

Patch by Sean Healy 'jalopeura'. Fixes #2446.