Do not apply the text area resizing to RTE fields (see #6500)
Correctly merge the CSS classes in the `Hybrid` class (see #6601)
Correct the „mail format options“ description in the form generator (see #6603)
Correctly assign articles to columns (see #6595)
Fix the XHTML variant of the comments form (see #5675)
Do not round the execution time in the debug bar (see #6577)
Use an encoded Russian language file in the „typolinks“ plugin (see #6224)
Optimize the language files of the „typolinks“ plugin
Remove a redundant `newsletter.css` reference
Correctly unset the PHP session cookie depending on its parameters
Correctly resolve the module dependencies (see #6606)
Correctly detect Android tablets in the `Environment` class (see #5869)
Support the Google+ vanity name in addition to the numeric ID (see #6454)
Unset the „title“ attributes of the hyperlink element in the back end (see #6258)
Remove a redundant class member from the `DC_Table` class (see #6607)
Prevent the back end tool tips from exceeding the screen width (see #6639)
Improve the tree view error messages (see #6620)
Show a hint in the news archive menu if there are no items (see #5888)
Fix some broken back end icons (see #6214)
Correctly trim the SQL statements in the `Database` class (see #6623)