Introduce a setting to keep using deprecated attributes

[Clemens K.]

This is related to the tickets 4878 and 4246.

Please introduce a setting in config: useDeprecatedAttributes = TRUE|FALSE;

Based on this, the deprecated attributes for tables and images should either remain in the code (thus having both height="123" and style="height:123px;") or be used exclusively (only height attribute, no style).

This is important in order to be able to use ckeditor for editing html emails.

It is possible to hack the relevant plugin files, but in order to keep the code clean and allow easy upgrades to future versions it would be better to introduce a config setting.

[Alfonso Martínez de Lizarrondo]

There's no need for such setting. Look at ​http://dev.fckeditor.net/attachment/ticket/5024/5024_5.patch