Fix this by setting a flag in editor to not use CSS styles for the background image.
Then back out my fixes in mailnews to work around the inline style editor was giving us.
With this change, mail compose now handles background images again and they are preserved when you save as draft
or save as template.
r=neil
sr=bienvenu
a=glazman for the editor change
a=asa for 1.5 final
git-svn-id: svn://10.0.0.236/trunk@146578 18797224-902f-48f8-a5cc-f745e15eee43
d46792a502