integrating the XRP-102 patch should solve this as well

I did a first exploration of this patch, since this issue is related to the pluggable output formats per report.

Some general observations:
 - please [in the future] make diffs always in the root of the source tree, not in a higher or lower directory level, this makes the patch easier and safer to apply
 - in the changed files, it is very hard to follow what is actually changed because of source layout changes (not just spaces-to-tabs changes)

I will attach an updated patch which at least makes the changes in sitemap.xmap and layout.xsl readable (and also fixed some obvious errors, like a double "fins-serialize" resource and some other things which were introduced by accident).

Some more observations:
* layout.xsl uses a non-exising formatLinks template
* since this requires fins, the initial setup work for xReporter will become [even] more involved (because of the need to install the fins block in the Cocoon source tree)

Notes on getting fins compiled:
 - the batik jar in Cocoon 2.1.10 is 1.6, and is located in lib/optional
 - since our local.blocks.properties excludes everything by default, need to add an include.block.fins=true
 - in gump.xml, needed to add dir="src/blocks/fins"

Also missing are docs on how to use this, I've queried the relevant person in private.

The xreporter-cocoon directory (version 1.2.1) extended with the charts-patch

The charts patch has now been integrated.

The charts things themselves have been left pretty much untouched, except for a few changes:

* renamed f:dataselectie to f:dataselection
* renamed f:transparancy to f:transparency
* i18n now works by embedding <i18n:text> tags instead of using the 'format:' prefix
* the sitemap.xmap references the chart XSLs 'hardcoded', i.e. not via the skin.

The index file stuff has also been integrated, though this part has changed a bit more, I'll describe that later when resolving XRP-75.

Some basic documentation on the charts can be found here
http://cocoondev.org/xreporter/docs/presentation/514-cd.html

I'll add here some more comments on the differences between the 'index
file' system of the charts patch and what was actually implemented in
xReporter. A more complete description can be found in the documentation.

- In the charts patch the idx:group and idx:entry elements followed
  the file system structure: an idx:group corresponded to a directory
  and an idx:entry to a file in that directory.

  In the implemented system, the idx:group elements only serve to
  visually group several items together, it has no structural meaning.
  The idx:group elements can be nested inside each other to create
  a multi-level hierarchy. Use of idx:group is not obliged (= you
  can have top-level idx:entry's)

- Since there is no relation anymore between the idx:group's and the
  idx:entry's, the idx:entry's always need to have boh dir and file attributes

- The titles of idx:group are specified by a child idx:title tag.
  These can contain <i18n:text> tags for internationalization.

- The titles of idx:entry tags are, as before, derived from the
  f:name in the format files. For internationalization those should
  now also use <i18n:text> tags.