I've uncovered some problems in KoGenStyle and KoGenStyles.
- Not all style families have their own value in KoGenStyle::Type
   StyleParagraph, StyleRuby, StyleGraphic, and StylePresentation are not
defined.
- The documentation says:
   "StyleText,                   ///< style:style with style:text-properties"
  which is strange since also StyleParagraph, StyleTableCell, StyleGraphic,
StylePresentation and StyleChart can have style:text-properties too.
- There is an assert in KoGenStyles.cpp line 164 that only allows default
styles for StyleUser, StyleTableColumn, StyleTableRow and StyleTableCell.
 (StyleUser seems to be a synonym for the missing StylePresentation).

The problems are solved with the following steps:

- add StyleParagraph, StyleRuby, StyleGraphic, and StylePresentation to
KoGenStyle::Type
- fix the documentation for the 12 style families to not define styles by their
contents but by their family
- expand the assert to include the other 9 style families.

svn path=/trunk/koffice/; revision=1085521