* Some Drupal code compliance fixes

* Apply the correct color value intochart data

* Color module integrated and some fine tunning

* Simplified the settings page

* Drupal 6.2 changed the access rules. Fixed

* The new color palette is now merged to the chart data depending on what type of chart it it (generally, it adds the default color to series, but in case its a Pie Chart, it uses the palette on values)

* New menu description for Settings page

Misc:
* Testing environment page disabled for a while

* _charts_series_values() moved from charts.inc to charts.module

Misc:
* charts_chart() dont need the chart plugin as the first argument, since it will be given using the $chart array or thru settings

* Now settings options about series are loaded. So its possible to set default color for series.

* charts_chart() function now works fine

* implementation of hook_requirements() to alert users that he/she didnt installed any chart provider module

* hook_menu() implementation, creating a settings page and a testing environment
* charts_chart() function will be the contact point to all external modules to create a chart from a data

Misc:
* File $Id: $ correctly placed

* A small warning about the charts_api.txt file

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