Bugfix release for the 2.5 version, fixing and improving the PDF export, broken images from the office importer, severe performance problem with many blog categories, and broken scheduler functionality.

* XWIKI-4869 - PDF export does not support classes in pdf.css
* XWIKI-5104 - Submission throttling when filtering the livetable in order to increase the livetable performance
* XWIKI-5152 - By default, feed plugin should use the fetching date as entries creation date
* XWIKI-5509 - PDF Export fails for field style with textarea type
* XWIKI-5588 - Wysiwyg removes image when image is left align and has a link around it
* XWIKI-5609 - Wrong version summary displayed when adding tags
* XWIKI-5617 - Images break when being imported from a doc
* XWIKI-5625 - PDF styling doesn't work anymore
* XWIKI-5635 - Clearing a previously not empty text filter will not update livetable permalink properly
* XWIKI-5637 - In the object editor, classes inaccessible to the current user due to access rights are displayed as $escapetool.xml entries
* XWIKI-5638 - Rendering errors message tooltip is not translated
* XWIKI-5644 - The WYSIWYG editor is not fully loaded with minimal configuration on WebKit browsers
* XAANNOTATIONS-37 - Change page header shortcuts separator for annotations
* XABLOG-23 - Performance problem with the Categories panel
* XABLOG-112 - Small rendering problem on blog
* XASCH-56 - Scheduler table only lists jobs in the scheduler space. It should list all jobs in the wiki
* XASCH-57 - Scheduler does not save jobs status properly
* XAWMB-7 - XWiki.WikiMacros page is not translatable
* XAWMB-8 - XWiki.WikiMacros requires programming rights
* XPWATCHLIST-114 - Broken "Watchlist Interval" preference
* XSCOLIBRI-239 - Vertical align and text align not working on cells with multiple lines and entire tables
* XSCOLIBRI-240 - Bind shortcut keys to their corresponding UI component
* XSCOLIBRI-241 - Improve support for portlet integration by avoiding using the body tag in CSS selectors
* XSCOLIBRI-243 - Change page header shortcuts separator to a more simple one that assures readability
* XSCOLIBRI-244 - Broken layout in IE6/7 caused by vertical-align: inherit
* XSCOLIBRI-245 - Avatars can get larger than their intended size
* XSCOLIBRI-246 - Block content inside table cells should not be distanced from the cell borders

See http://www.xwiki.org/xwiki/bin/Main/ReleaseNotesXWikiEnterprise251 and http://www.xwiki.org/xwiki/bin/Main/ReleaseNotesXEM251 for more details.