Patch for enhancements in ePublish module

Features added included:
1. Additional default topic (advertisement) for section just like
miscellenous and top stories.
2. New layout for epublish that prepare indexed content. An Table of content
is displayed on top with abstract of each node following TOC grouped on
topics. Nodes selected under top stories are always displayed on top and
that of miscellenous on the bottom as that online epublishing can have
header & footer content.
3. Advertisement section given new division id to provide a hook in CSS to
control its display.
4. Increased range of weight for nodes (-30 to +30) (helpful for news sites) .

Patch includes changes in basic module and css files and also contains code of a new file layout_indexed.inc to produce a table of content on top followed by abstract of each node grouped on topics.

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