Closes#2909, Emailcomponent SMTP authentication.
Closes#2916, EmailComponent: Add read receipt header.
Closes#2969, change default charset in emailcomponent from ISO-8859-15 to utf-8.
Closes#3304, EmailComponent doesn't allow custom view class.
Fixes#3353, Email Component, content not shown when a file is attached.
Fixes#3381, Email::__wrap function ignores the $_newLine configuration property.
Fixed ThemeView::renderElement() to load helpers
Changed View::renderElement() to search core elements also
git-svn-id: https://svn.cakephp.org/repo/branches/1.2.x.x@5788 3807eeeb-6ff5-0310-8944-8be069107fe0
