Update contao29 package to 2.9.2.

Version 2.9.2 (2010-12-02)
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- Updated TCPDF to version 5.9.023 (#2686)
- Updated MooTools Core to version 1.2.5 (#2545)
- Updated TinyMCE to version 3.3.9.2 (#2702)
- Updated mediaboxAdvanced to version 1.2.5 (#2701)
- Added: allow external images in HTML newsletters (#2396)
- Added: added insert tags for acronyms and abbreviations (#2478)
- Added: add class "sibling" to pages on the same level in the navigation menu (#2419)
- Fixed: do not allow insert tags in comments (#2499)
- Fixed: check for custom layout sections during the theme import
- Fixed: only send the comments notification once (#2407)
- Fixed: skipping the first item of a news list did not work correctly (#2488)
- Fixed: allow column width 0 in page layouts (#2554)
- Fixed: consider the protocol when loading scripts from the Google CDN (#2450)
- Fixed: textareas in the back end were cut off in Opera (#2404)
- Fixed: the task history could not be collapsed (#2424)
- Fixed: the link insert tags showed the page title instead of the page name (#2371)
- Fixed: do not show empty fieldset legends in the form generator (#2625)
- Fixed: preserve curly brackets when replacing simple tokens (#2597)
- Fixed: the style sheet importer did not support some CSS3 selectors (#2566)
- Fixed: textual date insert tags were not replaced when loaded from cache (#2644)
- Fixed: the image insert tag did not output the image dimensions (#2529)
- Fixed: clear the $_GET array after rendering the event list module (#2445)
- Fixed: do not aggregate style sheets with a @font-face selector (#2443)
- Fixed: news insert tags did not handle entities correctly (#2604)
- Fixed: do not show the FTP and database passwords in the install tool (#2417)
- Fixed: minor fixes for the TimePeriod widget (#2477)
- Fixed: update the CSS files after an old version of a record has been restored (#2524)
- Fixed: custom page templates were not shown in "override all" mode (#2494)
- Fixed: incorrect event sorting (#2675)
- Fixed: do not execute hooks in the extension manager (#2448)
- Fixed: check for existing files when renaming files in the file manager (#2610)
- Fixed: check redirect pages for circular references (#2704)
- Fixed: fixed a few minor spelling issues (#2403)
- Fixed some minor issues

(taca)